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2.用所给单词的适当形式填空 　command　recognize　request　straight (1)—May I 　　　　　a favour of you?  —Of course. (2)—The officer 　　　　　the thief to raise his hands.  —He caught the thief,didn’t he? (3)Though we hadn’t seen each other for twenty years,I 　　　　　him at first sight.  (4)The children are asked to sit 　　　　　when they read.

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