3.---Shall we ask Bob to help us do the work?---Sure. Time _____ and we have a lot to do tonight.

14. At that time ______ two important players ______ a big problem for Lang Ping.

23.

7.最早进行遗忘研究的是（ ）。

8. It is no longer a problem ______ the poor children in this district can go to school.

35. What is the best title of the passage?

29. When Alexander Fleming discovered the first antibiotic, he ______.

20.

4.开学考试成绩能够预测入学学后的学业成绩，这说明该测验具有较高的（ ）。

36.未成年的父母或者其他监护人不得使未满（ ）周岁或由于身体、心理原因需要特别照顾的未成年人处于无人看护的状态。

问题：（1）阐述耶克斯—多德森定律。（4分）

2.---Is this blue schoolbag Lucy’s?---No. It ______ be hers. Her schoolbag is pink.