1. 按要求完成句子, 每空一词。

1. （1） The Smith family have learned Chinese since 2000.  (对划线部分提问)

      the Smith family  Chinese?

3. （2） Mum, my head hurts. (改为同义句)

   Mum, I   .

5. （3） They began to work two hours ago. (改为同义句)

   They    two hours.

7. （4） The girl is so tired that she can't go on waking. (改为简单句)

   The girl is  tired  go on waking.

9. （5） I bought this computer three years ago. (改为同义句)

   I  this computer  three years ago.