Câu hỏi: Doctors _____ a cure to AIDS yet.

A. have found

B. found

C. haven't found

D. hasn't found

Câu 1: Ann is interested in.................... young children.

A. teach

B. teaches

C. to teach

D. teaching

Câu 2: We…………..in this town for a long time. We…………..here sixteen years ago.

A. had been/come

B. have been/came

C. were/came

D. are/came

Câu 3: No, you can’t go to holiday by yourself! You aren’t . . . . . . . . . . . . !

A. very old

B. too old

C. old enough

D. enough old

Câu 4: He _____ to give up smoking since last week.

A. was trying

B. have tried

C. has tried

D. tried

Câu 5: Do you mind _____ up?

A. wash

B. washing

C. washed

D. to wash

Câu 6: Fish were among the earliest form of life. Fish ………….. on earth for ages and ages.

A. existed

B. are existing

C. have existed

D. exist