chuyển sang câu rút gọn ở mệnh đề quan hệ
         

31.    John, ………. whose father is a doctor, wants to be a doctor too. 32.    The book ………. which is on the table is not for sale. 33.    My sister, ………. whose husband is inside the car, can't drive. 34.    He's the boy ………. who delivers the newspaper on Sundays. 35.    My friend Paul ………. who lives in London, always takes the bus. 36.    The Indian restaurant ………. which is in Green Street is very expensive. 37.    This restaurant Chef, ………. who is a native Indian, is a marvelous cook. 38.    Who is this man ………. whose wife is looking so sad? 39.    Do you see the dog, ………. which is over there? 40.    Is this the umbrella ………. which you lost? 41.    The man ………. who is sitting by the door takes a break. 42.    He reminds me of someone ………. whom I used to know. 43.    The children played in the snow  ………. which had fallen during the night.