Câu hỏi: The number of students attending universities to study economics have increased steadily in the last few years.

A. of students

B. attending

C. economics

D. have

Câu 1: 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 2: 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 3: A smile can be observed, described, and reliably identify, it can also be elicited and manipulated under experimental conditions.

A. identify

B. experimental

C. can also

D. A smile

Câu 4: The harder he tried, the worst he danced before the large audience.

A. worst

B. the

C. before

D. tried

Câu 5: It is recommended that people to take regular exercise.

A. recommended

B. people

C. to take

D. exercise

Câu 6: My teacher is very strict and he always makes us to finish all the exercises before leaving school.

A. is

B. strict

C. to finish

D. leaving school