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19. I asked Hoa if her sister was good at English.
37. Mary said to John that she couldn't go to the movie with him. 
25. The mother asked her who she would meet at the airport the next day. 
21. The policeman asked her how many people there were in her family. 
22. The form teacher asked the boy why you didn't come there on time. 
10. She said to them that he had lived there for five years. 
23. The girl said that she would answer the phone. 
25. My friend said that it might rain. 
37. They asked me if I would buy them some food. 
42. She asked me if I was going to take the level exam that weekend. 
50. She asked Tung how many languages he could speak. 
57. I asked Tam how long she would stay in England. 
58. The teacher asked Lien what her hobby was. 
59. She asked Ba why he collected waste papers. 
60. Hoa asked her parents when they would visit Hanoi.