Câu hỏi: He enjoys _____ in the rain.

A. walk

B. walks

C. to walk

D. walking

Câu 1: Are you looking forward.................... on your cassation?

A. you go

B. going

C. to going

D. to go

Câu 2: You shouldn't spend all your time.....................

A. study

B. to study

C. studying

D. studied

Câu 3: The news came as no surprise to me. I…………..for some time that the factory was likely to close.

A. knew

B. had known

C. have existed

D. exist

Câu 4: Do you mind _____ up?

A. wash

B. washing

C. washed

D. to wash

Câu 5: 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

Câu 6: He _____ to give up smoking since last week.

A. was trying

B. have tried

C. has tried

D. tried