Yêu cầu: Diễn “yes” nếu đại từ quan hệ (who/ which/ that) trong các câu sau có thể được lược bỏ và diễn “no” nếu không thể 1. We lit a fire, which soon dried our clothes. Yes 2. The report, which should have taken an hour and a half to finish, took three hours. No 3. The children who I was looking after were terribly spoiled. No 4. She thanked him for the kind help that she received. Yes 5. There wasn't any directory in the telephone box from which I was phoning. 6. The man who was driving us didn't know the way. Yes 7. The Smiths, whose house was destroyed in the explosion, were given rooms in the hotel. No 8. The car which we hired from the airport broke down on the road. Yes 9. My boss, who I really wanted to see, was too busy to meet anyone. No 10. Mr. and Mrs. Jones, who were out playing cards, knew nothing of the burglary. Yes Yêu cầu: Diễn “who, which, where, whose” vào câu sao cho phù hợp 
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