句型转换。

1. Is that his book? (改为复数句) 

                              their books?

2. He plays volleyball on Saturday afternoon. (改为一般疑问句). 

                 he              volleyball on Saturday afternoon?

3. They like broccoli and strawberries. (改为否定句).

    They                           broccoli or strawberries.

4. Nick usually eats breakfast at 7:00 every morning. (对划线部分提问) 

                 does Nick usually              at 7:00 every morning?

5. My favorite color is red. (对划线部分提问). 

                              is your favorite color?