2．他们不辞劳苦地帮助我。(pain)

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1．我们决不怜悯人民的敌人。(show mercy on)

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8．They didn’t notice me because they________just now.

答案：1.dates from　2.shares with　3.was used to　4.be related to　5.as if　6.was

dreaming up　7.is located in　8.were deep/lost in thought

7．The library________the center of city.

6．He________another method after he had failed again.

5．It seems________it is going to rain.

4．His diseases could________the poor working environment.

3．Stone________build arms in the old times.

2．Who________the story which sounds terrible at night?

1．The famous university________500 years ago and it is even more important nowadays.