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

A. explanation

B. knowledge

C. experiment

D. theory

Câu 1: We don't sell foreign newspapers because there is no……….for them.

A. request

B. claim

C. suggest

D. ask

Câu 2: 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 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: The elevator isn't running now. It must be….order. 

A. out of

B. for

C. into 

D. behind

Câu 5: The rivers can be…………..by chemicals. 

A. poisonous 

B. contaminated

C. flooded

D. polluting

Câu 6: Can you see the man ______ is sitting at that table?

A. whose

B. who

C. whom

D. which