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: Most of the houses on the street was built in the previous century.

A. of

B. on

C. previous

D. was

Câu 2: The harder he tried, the worst he danced before the large audience.

A. before

B. the

C. worst

D. tried

Câu 3: Oxygen plays a important role in maintaining live.

A. a

B. plays

C. role

D. live

Câu 4: There are some people in the government try to improve the lives of poor people.

A. to improve

B. There are

C. lives

D. try

Câu 5: The director, as well as his wife and two children, were injured in the accident.

A. the

B. well

C. were

D. in

Câu 6: She did not know where most of the people in the conference was from.

A. did not

B. where

C. the

D. was