【单选题】【消耗次数：1】
Let’s begin our class _________ you are all here.
①
if
②
when
③
since
④
before
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相关题目
【单选题】
Things are back to _____ since we paid off all our debts.
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①
正确
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①
was
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In the author’s opinion, if you cannot memorize all the new words you are learning, it is because _____.
①
you are forgetful
②
you are not working hard enough
③
you are not interested in memorizing English words
④
you are trying to memorize too many new words at a time
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We all thought ______ pity that you were unable to attend our meeting.
①
that
②
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③
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④
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随机题目
【单选题】
依据《安全生产法》的规定，生产经营单位新建、改建、扩建工程项目(以下统称建设项目)的安全设施，必须与主体工程().
①
A.同时设计、同时施工
②
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③
C.同时设计、同时施工、同时投入生产
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D.同时施工、同时投入生产和使用