1. 同义句转换，每空一词。

1. （1） The box is light enough for the boy to carry.

   The box is light the boy can carry it.

3. （2） He likes watching TV, and his sister likes watching TV, too.

   He likes watching TV, and his sister.

5. （3） I don't know how I can keep my room clean.
   

   I don't know how my room clean.
   

7. （4） Mrs. White told Tom that he mustn't throw paper on the ground.

   Mrs. White told Tom throw paper on the ground.

9. （5） Hurry up, or you'll be late for the party.
   

   you hurry up, you'll be late for the party.