用所给词的适当形式填空。

1. There are many new       ( build) in our city.

2. We can do the work with       (little) money and       ( few) people than they can.

3. There are       ( hundred) of people on the ground.

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

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

6. Today is Sunday. Let's go       ( skate) .

7. Please buy some       ( toothbrush) for them.