1. "You can't smoke any more", the doctor. said to him.(改间接引语)
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2. We should water the flowers every four hours.(改被动语态)
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3. I was cooking. My mother came back home.(when 连成一句)
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4. The book is very old. Its cover is red.(whose连句)
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5. He was ill yesterday. He went on working as usual.(though连句)
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6. Mrs Morison can sing very well.   Mrs Morison is very ______  ______ singing.
7. Jim doesn't have to do the housework. Mary doesn't, either.
  ______ Jim ______ Mary ______ to do the housework.
8. She had nothing for supper, ______ ______?(反意疑问句)
9. He's worked in the shop for two years?(提问)
  ______ ______ has he worked in the shop?
10. How many people are there in India?
     ______  ______ ______  of India?