【单选题】【消耗次数：1】
Jane is in a hurry because the train to the airport leaves ______ half an hour.
①
by
②
in
③
for
④
until
参考答案：
复制
纠错
相关题目
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____ grab a bite at the snack bar.
①
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③
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【单选题】
As the train will not leave until one hour later, we _____ grab a bite at the snack bar.
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①
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①
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随机题目
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①
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②
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③
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【单选题】
如果一个家长想用看电视作为强化物奖励儿童认真按时完成作业的行为，最合适的安排应该是( )。
①
让儿童看完电视以后立即督促他完成作业
②
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③
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④
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