题目

题型：不详难度：来源：

Yesterday it rained heavily when school was over. So we _______ tay in our classroom.
A. should               B. must             C. had to

答案

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。