Câu hỏi: He enjoys _____ in the rain.

A. walk

B. walks

C. to walk

D. walking

Câu 1: Doctors _____ a cure to AIDS yet.

A. have found

B. found

C. haven't found

D. hasn't found

Câu 2: Just keep on................ what you like.

A. do

B. did

C. doing

D. done

Câu 3: He _____ to give up smoking since last week.

A. was trying

B. have tried

C. has tried

D. tried

Câu 4: I'd like to borrow this book. .................................. it yet?

A. Did you read

B. Had you read

C. Have you read

D. Do you read

Câu 5: What does your brother . . . . . . . . . . . . . . ?

A. look like

B. look as

C. be like

D. as

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