"Thank you very much for your help, John," said Daisy.

A. If she hadn't been too shy, she would have enjoyed parties.

B. If she weren't shy, she will enjoy parties.

C. She said that if she wasn't very shy, she would enjoy parties.

D. If she weren't very shy, she would enjoy parties.

A. men

B. population

C. human

D. people

A. has been left

B. left

C. has left

D. had left

A. change

B. machine

C. children

D. church

A. The faster the population grow the more natural resources we own.

B. The natural resources are always enough to supply the hugest population.

C. It's necessary to practise birth control to raise people's living standards.

D. The production of grains always meet the need of people.

A. proposed

B. reminded

C. suggested

D. promised