句型转换。

1. She is taking care of her sick mother. (变一般疑问句)

    ______ ______ taking care of her sick mother?

2. Jim felt upset just now. (变否定句)

   Jim ______ ______ upset just now.

3.Tom's mother looks worried. (对画线部分提问)

   ______ ______ Tom's mother look?

4.  Let's sing the song together, ______ ______? (完成反意疑问句)

5. 他太困了而不能做任何家庭作业。 (完成译文)

    He was ______ sleepy ______ do any homework.