句型转换。

1. It started about two days ago. (对划线部分提问) 

                               it start?

2. You are not quiet. I think.（合成一句） 

    I                           that you              quiet.

3. Something is wrong with my stomach. (同义句转换)

    I have                           .

4. What's wrong with you? (同义句转换)

    What's                            with you?

5. improving, stressed out, I'm, my, English, because, isn't    (连词成句)