Câu hỏi: Tom said that he was trying to carry out some campaigns to protect environment and will encourage others to do so.

A. he was trying

B. some

C. campaigns

D. will

Câu 1: The bones of the elderly are more prone to fractures than of young people.

A. the elderly 

B. more

C. to

D. of

Câu 2: More than ten students have failed the exam, that surprised the class teacher.

A. more than

B. have failed

C. that

D. the

Câu 3: If you take the train, it would be much more convenient.

A. if

B. the train

C. would be

D. much

Câu 4: It is very difficult for her to prevent him for smoking in her house.

A. very

B. for 

C. prevent 

D. for smoking

Câu 5: Each of the members of the group were made to write a report every week.

A. were

B. members

C. to write

D. week

Câu 6: Could you tell me how can I get to the city library, please?

A. Could

B. me

C. how can I

D. the