Câu hỏi: It is important that you turned off the heater every morning before you leave for class.

A. turned off

B. before

C. important

D. leave for

Câu 1: David, who mother is Vietnamese, speaks both Vietnamese and English fluently.

A. who

B. is

C. speaks 

D. fluently

Câu 2: Oxygen plays a important role in maintaining live.

A. a

B. plays

C. role

D. live

Câu 3: He passed the exams with high scores, that made his parents happy.

A. passed

B. with

C. that 

D. happy

Câu 4: Publishing in the UK, the book has won a number of awards in recent regional book fairs.

A. publishing

B. has won

C. in

D. book fairs

Câu 5: I had my motorbike repair yesterday but now it still doesn’t work.

A. had

B. repair

C. but now

D. work

Câu 6: There are many reasons why a particular species may become endangering.

A. endangering

B. may

C. a

D. reasons why