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

A. very

B. for 

C. prevent 

D. for smoking

Câu 1: If they took their language lesson seriously, they would be able to communicate with the locals now.

A. took

B. seriously

C.  would be

D. with the locals

Câu 2: Ancient people made a clay pottery because they needed it for their survival.

A. a clay pottery

B. because

C. it

D. their survival

Câu 3: The harder he tried, the worst he danced before the large audience.

A. worst

B. the

C. before

D. tried

Câu 4: 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 5: Students suppose to read all the questions carefully and find out the answers to them.

A. suppose

B. all the

C. all the questions

D. them

Câu 6: My pen has very few ink in it, so could you give me some

A. has 

B. few ink

C. could

D. some