2 . 已经证实，家庭氛围对孩子的身心健康有很大的影响。
_________ the atmosphere of the family has a great effect on children’s mental and physical health.

3 . ________________ (让我感到印象最为深刻的是) was the relay race for the boys. Fighting for their classes, every one of them had to cooperate with each other and performed the best. The classmates cheered them on.(根据汉语提示完成句子)

5 . 众所周知，杨利伟是中国第一位飞入太空的宇航员。
①________Yang Liwei is China’s first astronaut to fly into space.(it作形式主语)
②________,Yang Liwei is China’s first astronaut to fly into space.(定语从句)
③________Yang Liwei is China’s first astronaut to fly into space.(主语从句)

6 . ________________ he didn’t accept the job.
他没有接受那份工作，真是遗憾。（it作形式主语）

7 . ________________ the bus should have been delayed so long.(it作形式主语)
真奇怪，汽车竟然延误了这么长时间。

8 . It should __________ Tom’s method has the same advantages as Lucy’s.
应该指出，汤姆的方法和露西的方法有同样的优点。