答案

　　1．Seeing; terrifying; terrified　2.broken 3．being paid　4.to choose; to buy　5.to risk; going 6．to wash　7.lost　8.buying　9.seated 10．sinking; tied

Ⅱ.单句改错

　　1．I crossed the street to avoid to meet him，but he saw me and came running towards me.

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　　2．The boy was seen to play the piano at nine o'clock yesterday evening.

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　　3．Judging from his exciting voice，he must have some good news to tell me.

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　　4．America is one of the first countries mastering space technology by now.

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5．Having passed all the tests，she felt a great weight taking off her