问题
选择题
You may keep the book for one more week_____ no one else needs it.
A．provided that
B．so that
C．in order that
D．in case
答案
答案：A
考查连接词。A如果；B以至于；C为了；D以防；结合句意可知A正确。句意：如果没有别人需要，你可以再持有这本书一个星期。
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