Câu hỏi: It is imperative that this letter           immediately.

A. were sent

B. be sent 

C. sent

D. send

Câu 1: She wanted to know             in my spare time. 

A. what I did 

B. what did I do

C. what I do

D. what do I do

Câu 2: Global warming is thought to be responsible for some of the world's recent          disasters. 

A. natured

B. naturalism

C. nature

D. natural 

Câu 3: I think the computer is such a              invention

A. useless

B. useful

C. use 

D. usage

Câu 4: The farmers were sure that they_____another good harvest the next year. 

A. had

B. had had

C. will have

D. would have

Câu 5: After leaving university , he decided to ______himself to a career in music. 

A. devote 

B. take

C. assign

D. employ 

Câu 6: Sarah couldn't meet us,           was a pity. 

A. what

B. which 

C. that 

D. it