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】考查固定搭配。句意:这则信息非常重要,因此它应该被尽快地传达到。 be supposed to do sth. 表示 “ 理应做某事 ” ,是习惯搭配,而且 send 和 the message 之间是逻辑上的动宾关系,故使用被动语态形式。故选 A 。