基本语法。

1. There            (be) fewer cars in the future.

2. She wants to be a          (science) when she grows up.

3. We can see _______(hundred) of birds flying to the south.

4. There is ________(little) pollution in our city than last year.

5. I can do my homework by ________(I).

6. He lives in a tall ________(build) and goes up and down by elevator.

7. It took me an hour ________(finish) my homework.

8. In two hours Miss Yang ________(fly) to Paris.

9. Betty ________(write) to her parents the day before yesterday.

10. The _______(factory) produce(生产)many different kinds of toys for

children.