12．The teacher asked a difficult question.and finally only Tomcameup with a good answer．——青夏教育精英家教网——

12．The teacher asked a difficult question，and finally only Tomcameup（想出，提出） with a good answer．

11．The army was sent to the earthquake-stricken area todigout （挖掘出） many people trapped underground．

10．She has been worryingeversince（自从…以后）the news came．

9．He did iton/bypurpose/design（故意），which made his parents very angry．

8．The country hasgonethrough（经历） too many wars，making his people even poorer．

7．Although many Americans move a lot，they still recognize and understand each other's dialects．

6．Actually all languages change and develop when cultures meet and communicate with each other．

5．As I lay beneath（在下面）the stars I thought about how far we had already traveled．

4．I think they've finally made up their minds to spend next summer studying in Europe，rather than going to the USA．

3．She is very reliable and I knew I didn't need to encourage her．

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