Vui lòng đọc kỹ đề trước khi làm bài.
Câu 1. My dad ________ smoking in the garage.
Câu 2. The printer ________ working well.
Câu 3. Had the players _____ playing by the rules?
Câu 4. She ________ expecting the worst.
Câu 5. Had the teachers ________ before the strike?
Câu 6. Our pool pump ________ running properly before the storm.
Câu 7. My sister’s roommate was upset. She _____ been waiting for an hour.
Câu 8. I just heard about the accident. ________ been working all night?
Câu 9. We were shocked to see her. ________ been expecting her.