Câu hỏi: 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 1: We decided to go out for dinner _________it was raining heavily. 

A. because

B. despite 

C. even if

D. although

Câu 2: Don't forget to come here in time,            ?

A. can you

B. will you

C. do you

D. are you

Câu 3: I didn't arrive in time to see her. 

A. I was early enough to see her. 

B. I wasn't early enough to see her.

C. I didn't want see her.

D. She didn't want to see me.

Câu 4: 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 5: “I would study English if I were you,” Mai’s friend said. 

A. Mai’s friend advised her to study English.

B. Mai’s friend advised her to have studied English.

C. Mai’s friend said that she was like Mai.

D. Mai told her friend to study English.

Câu 6: I don't know him             to borrow money from him.

A. enough good

B. good enough

C. well enough 

D. enough well