Câu hỏi: You          forget what I told you . It is very important

A. need not 

B. don't have to

C. must not

D. shan't

Câu 1: It is raining hard, so our meeting has to be _________ till next Saturday? 

A. put off

B. put down 

C. put up 

D. put away

Câu 2: People have discovered a new source of energy. 

A. A new source of energy have been discovered by people.

B. A new source of energy has discovered.

C. A new source of energy has been discovered.

D. A new source of energy have been discovered. 

Câu 3: We must take steps to preserve natural resources; otherwise the planet will be in danger. 

A. Unless we take steps to preserve natural resources, the planet will be in danger. 

B. Unless we take steps to preserve natural resources,the planet will not be in danger.

C. If we take steps to preserve natural resources, the planet would be in danger.

D. If we take steps to preserve natural resources,the planet will be in danger. 

Câu 4: When we were children we          skating. 

A. had gone

B. were going 

C. go 

D. used to go

Câu 5: I don't know him             to borrow money from him.

A. enough good

B. good enough

C. well enough 

D. enough well

Câu 6:                 his childhood in DALAT, he knew the city well

A. To spend 

B. Spent

C. Having spent 

D. To have spent