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: Constantly staying in cold weather may bring           pneumonia

A. in

B. off

C. up

D. on

Câu 2: 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 3: I don't know him             to borrow money from him.

A. enough good

B. good enough

C. well enough 

D. enough well

Câu 4: I have two history books, but ____are about American history

A. none of them

B. all of them

C. neither of them

D. most of them 

Câu 5:              Christmas Eve, people often have parties at midnight

A. In

B. At

C. On

D. For

Câu 6: 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.