句型转换。

1. Will there be less pollution in the world? (改为肯定句)

      ____ ____ ____ less pollution in the world.

2. There will be only one country. (改为否定句)

    ____ ____ ____ ____ one country.

3. We often do some exercise in the morning. (改为否定句)

   ____ ____ ____ ____ exercise in the morning.

4. I think my sister will be an English teacher in five years. (对画线部分提问)

   ____ ____ you think your sister ____ ____ in five years?

5. His mother often goes to school by bike. (改为同义句)

    His mother often ____ to____.