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

A. you go

B. going

C. to going

D. to go

Câu 2: According to the research reports, people usually ………….. in their sleep 25 to 30 times each night.

A. turn

B. are turning

C. have turned

D. turned

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

A. was trying

B. have tried

C. has tried

D. tried

Câu 4: Ann is interested in.................... young children.

A. teach

B. teaches

C. to teach

D. teaching

Câu 5: Would you like..................... somewhere for a rest?

A. going

B. to go

C. go

D. to be gone

Câu 6: Just keep on................ what you like.

A. do

B. did

C. doing

D. done