Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

For centuries, musics have played acoustical guitars, which produce sound from the vibration of the strings.

If orders keep coming in like this, I'll have to _______ more staff.

Thanks to the help of his teacher and classmates, he made great ______ and passed the end term exam with high marks.

_______ there is not enough information on the effects of smoke in the atmosphere, doctors have proved that air pollution causes lung diseases.

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges

Peter: "My mother's much better now." – Kyle: “________” 

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is CLOSEST in meaning to each of the following questions.

The weather was so terrible that we spent the whole day indoors.

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

I take my hat off to all those people who worked hard to get the contract.

Poor management brought the company to _______ of collapse.