You can’t borrow books from the school library ______ you get your student card._刷题宝

题干

You can’t borrow books from the school library ______ you get your student card.

A．before	B．if
C．while	D．as

上一题下一题 0.64难度单项选择更新时间:2009-11-28 08:14:48

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