【题目】What are you doing out of bed? It's very late. You are ________ to be asleep.
A. supposed B. believed
C. challenged D. invited
在线课程【答案】A
【解析】考查固定搭配。A. supposed 认为，假定，猜想；B. believed相信，认为；C. challenged挑战；D. invited邀请。be supposed to do sth.按理说应该去做某事。句意：你还不睡觉干什么？已经很晚了，你本该已经睡着了。故选A。