1 . as引导非限制性定语从句
Those who make great discoveries must often overcome many challenges along the way--________________________________(就像探险家克里斯托弗·哥伦布那样). (根据汉语提示完成句子)

2 . ________ is known to us, body language can give away a lot about your mood. (用适当的词填空)

3 . ________is reported in the newspapers, talks between the two countries are making progress.

A．As

B．It

C．what

D．which

4 . __________ is known to all, Chinese learning calls for a large amount of patience. （用适当的词填空）

5 . ________ (正如我们强调的那样) many times, “serve the people” is our first policy. (stress) (根据汉语提示完成句子)

6 . ______ I have explained on the phone, your proposal will be considered at the next meeting.

7 . He gets nervous when he makes a speech in public, ______ is often the case. (用适当的词填空)

9 . Taiwan is a part of China, ________ is known to all.（用适当的词填空）

10 . _________ is often the case, senior three students feel anxious and upset before important examinations. (用适当的词填空)