题目内容
—Why didn’t you go to school yesterday?
—______ my mother was in hospital and I had to take care of her.
A. Then B. Because C. If
B
解析试题分析：Then那么，然后；Because因为；If是否，如果。句意：昨天你为什么没有去上学？——因为我的母亲生病住院了，我不得不照顾她。结合语境可知选B。
考点：考查连词辨析
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