【单选题】【消耗次数：1】
嫩枝扦插必须保留一部分叶，若全部剪掉则难以生根
①
正确
②
错误
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may
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might
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could
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must
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If they______to do this work,he might do it some other way.
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were
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should
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will
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can
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that
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why
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when
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whether
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“ Has he seen this film ? ” “Yes. He______ it several days ago.”
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saw
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has seen
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had seen
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was seeing
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The thought flashed across my mind: “By some ?means or______ she has some information about my engagement. But how?”
①
other
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others
③
the other
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the others
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You cant imagine what great trouble they have________the problem________.
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to solve;being talked about
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solving;discussing
③
to solve;to talk about
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solving;being discussed
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①
is playing
②
plays
③
was playing
④
played