2. 外语
  3. It was essential that the application forms______（截至期限前送回）

It was essential that the application forms______（截至期限前送回）

admin2013-05-19  99
问题 It was essential that the application forms______（截至期限前送回）
选项
答案be sent back before the deadline
解析 “截止期限前”可以用before the deadline来表达。“送回”用sendback表达，又由空格前面的“It was essential that”可知后面要用虚拟语气，且forms为动作的承受者，后面的动词要用被动的形式，故答案为(should)be sent back before the deadline。
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大学英语四级

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