Câu hỏi: Einstein's …….is really too difficult for the average people to understand. 

A. explanation

B. knowledge

C. experiment

D. theory

Câu 1: I promptly went to sleep again. 

A. early

B. immediately 

C. soon 

D. after a while

Câu 2: I want to take my dogs with me. I need their……. 

A. relation

B. relationship

C. company

D. companion

Câu 3: I need some small change to……..the porter. 

A. dip

B. chip

C. sip

D. tip

Câu 4: She didn't ……….doing the ironing, as she didn't want to go out anyway.

A. object

B. matter

C. refuse 

D. mind

Câu 5: The police questioned all guests. They……………….that one of them was a spy.

A. wondered 

B. surprised 

C. challenged

D. suspected

Câu 6: It ________ easy to paint pictures if you knew how to.

A. would be

B. had been

C. would have been

D. be