Câu hỏi:  The World War II …… in 1939 and …… in 1945.

A. begins/ ends

B. has begun/ ended

C. was beginning/ end

D. began/ended

Câu 1: We will send these letters to him when we …. in London.

A. will arrive

B. arrive

C. arriving

D. have arrived

Câu 2:  What is your purpose ……….. learning English?

A. of

B. to

C. for

D. on

Câu 3:  I am looking forward ……….. seeing you.

A. to

B. for

C. on

D. at

Câu 4: There are more and more people died …… AIDS.

A. on

B. from

C. at

D. of

Câu 5:  Tobacco has bad effects ……… our health.

A. on

B. from

C. at

D. of

Câu 6: We …… a lot important scientific discoveries in 2050.

A. have

B. will have

C. had

D. has had