A. Điều có thật ở hiện tại B. Điều không có thật ở hiện tại C. Điều có thật ở quá khứ D. Điều không có thật ở quá khứ

A. If + S + V (quá khứ đơn), S + would + V B. If + S + had + V3/ed, S + would have + V3/ed C. If + S + V (hiện tại đơn), S + will + V D. If + S + were, S + would + V

A. am B. was C. were D. be

A. studied B. had studied C. studies D. has studied

A. would go B. would have gone C. will go D. went

A. will buy B. would buy C. bought D. would have bought

A. wouldn't get B. wouldn't have got C. don't get D. won't get

A. leaves B. left C. had left D. would leave

A. would see B. would have seen C. saw D. had seen

A. am B. was C. were D. had been