Câu hỏi: The policemen………the robbery are looking for three young men.

A. investigate

B. investigating

C. investigated

D. investigates

Câu 1: I have had a headache…………….yesterday.

A. till

B. for

C. since

D. until

Câu 2: The students were all………….by the lion's roar. 

A. frighented

B. destroyed

C. bitten

D. collapsed

Câu 3: The principal doesn't permit………here. 

A. to shout

B. shout

C. shouting

D. shouted

Câu 4: "When will you see John?" - "I am looking forward to…………him next summer." 

A. seeing

B. seen

C. being seen

D. see

Câu 5: Let's go dancing,………..? 

A. shall we

B. will we

C. do we

D. let's not we

Câu 6: The chief of police………work is very important takes care of the public safety. 

A. who

B. which

C. whose

D. whom