Complete the passage with words from the box.

twice       attempt           capacity             wonders         explored                   regarded       unknown          formations                subterranean                measurements

With (1) ……………………of over 200 meters (656 feet) wide and 150 meters (492 feet) high as well as a length of 9 kilometers (5.6 miles), Son Doong Cave is the largest cave in the world.

Before 2009, Malaysia’s Deer Cave was (2) ……………………as the largest cave in the world until a group of scientists from the British Cave Research Association (3) ……………………and studied the Son Doong Cave finding it was in fact over (4) ……………………the size of Deer Cave.

Named by BBC News, the “most beautiful cave on the globe” makes this one of the great natural (5) ……………………of Asia. It is a mountain river cave featuring a fast flowing (6) ……………………river. Son Doong Cave is mostly comprised of limestone that has over time shaped into some of the tallest stalagmite (7) ……………………in the world. Within Son Doong Cave visitors will find it is so big that it contains its own jungle and river and has the (8) ……………………to be able to fit a 40-story skyscraper inside. The source of the river still remains (9) ……………………to this day with future plans of the British Cave Research Association to return soon and (10) ……………………to solve the many mysteries this cave holds.

When man first learned how to make a fire, he began to use fuel for the first time. The first fuel he used was probably wood. As time (1) man eventually discovered that substances such as coal and oil (2). Coal (3) very widely as a source of energy until the last century. With the coming of the industrial revolution, it was soon realised that production (4) if coal was used instead of wood. Nowadays, many of the huge factories and electricity generating stations (5) to function if there was no coal. In the last twenty or thirty years, however, the use of coal (6). As a result, there have been changes in the coal industry. It (7) that more people (8) coal if oil and gas were not so readily available. There is more than enough coal in the world for man's needs for the next two hundred years if our use of coal (9). Unfortunately, however, about half of the world's coal (10). Mining much of it would be very expensive even if it was possible to use new equipment.

1. A - passes              B - used to pass                    C - would pass          D - passed

2. A - are burning    B - would burn                     C - have burnt           D - were burnt

3. A - not used         B - did not use                      C - not using              D - was not used

4. A - doubles          B - had double                      C - will double          D - would double

5. A - were unable   B - would be unable             C - will be unable     D - are unable

6. A - has declined  B - will decline                     C - declines               D - would decline

7. A - believed         B - is believing                     C - believing             D - is believed

8. A - would use      B - used                                 C - use                        D - will use

9. A - did not increase                                             B - would not increase

    C - does not increase                                           D - may not increase

10. A - would never use                                          B - may never be used

      C - would never be used                                   D - may never use

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.

For Catherine Lumby, deciding to take on the role of breadwinner in her relationship was not a difficult choice. When she discovered she was pregnant with her first child, she had just been offered a demanding new role as Director of the Media and Communications department at the University of Sydney. But she didn't see this as an obstacle, and was prepared to use childcare when the children were old enough. It came, therefore, as a surprise to Lumby and her husband Derek that, after the birth of their son, they couldn’t actually bear the thought of putting him into childcare tor nine hours a day. As she was the one with the secure job, the role of primary care-giver fell to Derek, who was writing scripts for television. This arrangement continued for the next four years, with Derek working from home and caring for both of their sons. He returned to full-time work earlier this year.

Whilst Lumby and her husband are by no means the only Australians making such a role reversal, research suggests that they are in the minority. In a government-funded survey in 2001, only 5.5 percent of couples in the 30-54 year age group saw the women working either part- or full-time while the men were unemployed.

The situation is likely to change, according to the CEO of Relationships Australia, Anne Hollonds. She suggests that this is due to several reasons, including the number of highly educated women in the workforce and changing social patterns and expectations. However, she warns that for couples involved in role-switching, there are many potential difficulties to be overcome. For men whose self-esteem is connected to their jobs and the income it provides to the family, a major change of thinking is required. It also requires women to reassess, particularly with regard to domestic or child-rearing decisions, and they may have to learn to deal with the guilt of not always being there at key times for their children. Being aware of these issues can make operating in non-traditional roles a lot easier.

1. What is the main idea of the passage?

A. Men being the bread winners                                

B. Traditional roles of women

C. Women being the home makers                            

D. Reversed roles between men and women

2. Catherine and her husband decided that Catherine would be the primary earner because ____.        

A. she had a badly paid job                                       

B. she was not good at childcare

C. she had a reliable job                                             

D. she wanted her husband to stay at home

3. In paragraph 1, the word “him" refers to ____.

A. their son                 B. her husband            C. Derek                      D. her colleague

4. They decided that Derek would look after their son because they ____.

A. couldn’t afford to put their child in care for long periods each day

B. didn’t want to put their child in care for long periods each day

C. thought childcare was not safe enough for their children

D. worried about their son’s health problems

5. In paragraph 2, the word “reversal" is closest in meaning to ____.

A. stability                  B. modification           C. rehearsal                 D. switch

6. One reason for a change in the number of men staying home is ____.

A. the stability in the number of highly-educated women who are working

B. the fall in the number of highly-educated women who are working

C. the rise in the number of highly-educated women who are working

D. the fluctuation in the number of highly-educated women who are working

Indicate the word(s) CLOSEST in meaning to the underlined word(s): A smart sustainable city will meet the needs of present and future generations with respect to economic, social and environmental aspects.

Viết lại câu: I'll only help you if you promise to try harder. => Unless …

A: I’ll pick you up at eight o’clock on my way to the airport.

The flat is very noisy but we enjoy living here.

=> Even though .............................................................................................

Mary said, "I have not seen Peter since last month".

=> _________________________________________.