题目内容
Yesterday it rained heavily when school was over. We ________ stay in our classroom
[ ]
A．should
B．must
C．had to
D．has to
答案：C
解析：
解析：
|
点拨：此题考查情态动词。句意为：昨天放学时正在下大雨，我们不得不呆在我们教室里。强调外界因素的“必须”用 have to，强调内在因素用must。 |
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