题目内容
Yesterday it rained heavily when school was over. So we _______ tay in our classroom.
A. shouldB. mustC. had to
C
【解析】
试题分析:昨天放学时雨下的很大,所以我们只好呆在我们的教室里。A. should应该;B. must必须;C. had to不得不,根据句意及时间状语yesterday(昨天)此题选B。
考点:考查情态动词
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