Câu hỏi: He enjoys _____ in the rain.

A. walk

B. walks

C. to walk

D. walking

Câu 1: The World War II ………….. in 1939 and ………….. in 1945.

A. begins/ends

B. had begun/ended

C. has begun/had ended

D. began/ended

Câu 2: Ann is interested in.................... young children.

A. teach

B. teaches

C. to teach

D. teaching

Câu 3: Dad allowed Dora......................... to the party.

A. going

B. to go

C. go

D. gone

Câu 4: You shouldn't spend all your time.....................

A. study

B. to study

C. studying

D. studied

Câu 5: Just keep on................ what you like.

A. do

B. did

C. doing

D. done

Câu 6: Doctors _____ a cure to AIDS yet.

A. have found

B. found

C. haven't found

D. hasn't found