【多选题】【消耗次数：1】
He was on the top of the mountain,and he had ______ breathing.
①
A.problems
②
B..trouble
③
C.question
④
D.puzzle
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If he had worked harder, he ___.
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would succeed
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had succeeded
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should succeed
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He argued that it is the youths duty to find the problems in the society [] solve the problems in the society.
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随机题目
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外延式
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【判断题】
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①
正确
②
错误