题目内容
The message is very important, so it is supposed_____as soon as possible.A. to be sent B. to send C. being sent D. sending
A
解析be supposed to do是固定搭配。又因it(the message)与send因为被动关系,故用动词不定式的被动语态。
解析be supposed to do是固定搭配。又因it(the message)与send因为被动关系,故用动词不定式的被动语态。

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