1. David is going to have some Chinese classes tomorrow.（改为否定句）
    David ____ going to have          Chinese classes tomorrow.
2. The students of Class Two have a field trip on Sunday.（用next Sunday改写）
    The students of Class Two                                             a field trip next
Sunday.
3. They are going to go fishing tomorrow morning.（改为一般疑问句，并作肯定回答）
     －                  going to go fishing tomorrow morning?
     －Yes, they____．
4．We are going to the city by train.（对画线部分提问）
                                         going to the city?
5. She is going to leave at nine tomorrow.（对画线部分提问）
                         she going to leave?

1. David is going to have some Chinese classes tomorrow.(改为否定句)
    David _____going to have_____Chinese classes tomorrow.
2. The students of Class Two have afield trip on sunday.(用next sunday)
    The students of Class Two_____ _____ _____ _____.afield trip next sunday.
3. —They are going to go fishing tomorrow morning.(改为一般疑问句，并作肯定回答)．
    going to go fishing tomorrow morning?
    —Yes, they_____.
4. I'rn going to be a computer programmer.(对画线部分提问)
    _____ _____ _____going to be?
5. She is going to leave at nine tomorrow.(对画线部分提问)
    _____ _____she going to leave?

1. They are happy to see each other. (改为感叹句)
    ______ ______ they are to see each other!
2. The exam begins at nine. (改为一般疑问句)
    ______ the exam ______ at nine?
3. He was playing basketball at four yesterday afternoon. (就划线部分提问) 
    What ______ he ______ at four yesterday afternoon?
4. He had nothing for breakfast. (改为反意疑问句)
    He had nothing for breakfast ______ ______?
5. She doesn't think I can surf on the Internet. (改为反意疑问句)
    She doesn't think I can surf on the Internet, ______ ______?
6. He's put the tree in the hole? (改为一般疑问句)
    ______ he ______ the tree in the hole?
7. How useful the book is! (改为陈述句)
    It is ______ ______ useful book.
8. The population of Australia is about 19,500,000. (就划线部分提问)
     ______ ______ population of Australia?
9. The meeting will start in ten minutes. (就划线部分提问)
     ______ ______ will the meeting start?
10. Don't tell him to come to my office. (改为肯定的祈使句)
      ______ ______ to come to my office.