句型转换

1. I don’t know how I can work out the problem. （保持句意基本不变）

I don’t know __________ _________ work out the problem.

2. She has already finished her homework. (改成否定句)

  She _____ finished her homework ______.

3. The new bridge has been in use since 2005. (对划线部分提问)

  ______ ______ has the new bridge been in use?

4. Jack bought the book last Sunday. (保持句意基本不变)

  She ______ ______ the book since last Sunday.

5. Many people speak English in China. (改成被动语态)

  English ______ _______ by many people in China.