3 . 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)

4 . 据说他已经把这本小说读过五遍了。
①He ________ the novel for five times. (be said to)
②________ the novel for five times. (it作形式主语)

6 . _______________ Tom to help you collect money for the Children’s Centre?
为什么不让Tom帮你给儿童中心募集资金呢?

8 . He made __________ that everyone admired him.
他作了一场如此精彩的演讲，以至于每个人都钦佩他。