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

A. explanation

B. knowledge

C. experiment

D. theory

Câu 1: There has been a lot of………..against nuclear weapons.

A. criticism

B. contest

C. protest 

D. conflict

Câu 2: It ________ easy to paint pictures if you knew how to.

A. would be

B. had been

C. would have been

D. be

Câu 3: The house we have rented is……., so we will have to buy some beds, chairs, tables, etc. 

A. unrestored 

B. unrepaired

C. unfurnished

D. unable 

Câu 4: Because of the increasing enrolment, the school has to employ teachers who are not…….for their jobs. 

A. qualifying

B. qualified 

C. worth 

D. skilled

Câu 5: The decision was……….until a later meeting. 

A. cancelled

B. arranged

C. postponed

D. moved

Câu 6: The elevator isn't running now. It must be….order. 

A. out of

B. for

C. into 

D. behind