1.当时他没有办法，只能做作业。

He_  his   homework at that time.

12. — How soon_they_(be)  back?

—In two hours.

11. The library in that college_(name)  after   the famous scientist ten years ago.

10. A child usually_(begin) his school life at the age of five in theUSA.

9.    — How often_the World Cup_(hold)?

      —Every four years.

6,  have, from, an, lesson, to, art, 11:00， 12:00，we (.)(连词成句）

8. It is about ten months since I_(join)  the  Reading Club.

7. The Class 1, Grade 9 students will go for a picnic if it_(not rain) tomorrow.

5.  OK, is, with, that, him (？)(连词成句）

6.    The famous youth worker will tell you how_(solve)  your problem.