1. 句型转换。(每空一词)

1. （1） Please close the windows at once. (改为同义句)

   Please close the windows .

3. （2） Things are going very well.（对划线部分提问）

   things going?

5. （3） It's a good time for going for a picnic.（改为同义句）

   It's a good time for a picnic.

7. （4） We'd better go to bed early.（改为否定句）

   We'd go to bed early.

9. （5） Which is your favorite season?（改为同义句）

   Which season do you ?