9. Whatever there is plenty of sun and rain，the fields are green.

8. The streets in Nanjing are wider than Shanghai.

7. The playground of our school is larger than their school.

6. It was three months since he came to our school.

5. Tom had gone out as soon as his mother got home.

4. He was very foolish that he didn’t pass such an easy exam.

3. He won’t go out until his mother will come.

2. Since her husband had died，so she had to support her family.

1. The children were running on the playground as fast as they can.

10. She sang ______ she went along.