2. 外语
  3. It is essential that these application forms ________ (尽早寄出去)．

It is essential that these application forms ________ (尽早寄出去)．

admin2010-03-22  19
问题 It is essential that these application forms ________ (尽早寄出去)．
选项
答案be sent as early as possible
解析 主句中的表语是essential，谓语动词应使用“(should)+动词原形”的虚拟形式，同时使用被动语态。
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大学英语四级

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