问题描述：
9.23 It cost me 30 yuan to get here.Well,it was crazy of you to take a taxi __ you would
It cost me 30 yuan to get here.
Well,it was crazy of you to take a taxi __ you would come
by bus as well.
A.unless B.if C.when D.because
请说明理由,
It cost me 30 yuan to get here.
Well,it was crazy of you to take a taxi __ you would come
by bus as well.
A.unless B.if C.when D.because
请说明理由,
问题解答：
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