同义句转换。

1. To eat a balanced diet is very important.

    _____ very important _____ eat a balanced diet.

2. They are watching TV at home now.

    They are watching TV at home _____.

3. What's wrong with your sister?

    What's_____ _____ with your sister?

4. She has a sore throat.

    There is something _____ _____ her throat.

5. There is a lot of milk in the bottle.

    There is _____  _____ milk in the bottle.