题目内容
________ people go abroad, they have to bring their passports with them.
A.Until | B.When |
C.Because | D.Before |
B
试题分析:句意:当人们出国时,他们不得不带着他们的护照。A. Until直到B. When当C. Because因为D. Before在……之前,根据句意,故选B。
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