Themessageisveryimportant,soitissupposed

问题详情：

 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

【回答】

A考查非谓语动词。首先，固定句型be supposed to do sth.确定后接不定式短语作真正主语；第二，The message与send的关系为被动。故*为A. to be sent。

知识点：非谓语动词

题型：选择题