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

A. explanation

B. knowledge

C. experiment

D. theory

Câu 1: The rivers can be…………..by chemicals. 

A. poisonous 

B. contaminated

C. flooded

D. polluting

Câu 2: The man ______ car we bought was from Texas.

A. which

B. why

C. where

D. whose

Câu 3: Can you see the man ______ is sitting at that table?

A. whose

B. who

C. whom

D. which

Câu 4: 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 5: Her hair isn't completely straight - it's slightly ________.

A. Wavy

B. Curl

C. Waved

D. Bent

Câu 6: I promptly went to sleep again. 

A. early

B. immediately 

C. soon 

D. after a while