It was essential that the application forms______back before the deadline.

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问题 It was essential that the application forms______back before the deadline.

选项 A、must be sent
B、would be sent
C、be sent
D、were sent

答案C

解析 本题考查主语从句中虚拟语气的用法。在"It is/was+a.+that clause"形成的主语从句中,如果形容词为advisable,essential,important,necessary等评论性形容词时,that引导的从句应使用“(should+)动词原形”的形式。
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本试题收录于: 英语题库普高专升本分类
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