问题
选择题
What are you doing out of bed, Tom? You are___________ to be asleep.
A．supposed
B．known
C．thought
D．considered
答案
A
题目分析：考查固定词组。固定词组be supposed to do sth本应该做某事；句意：Tom，你下床干什么？你本应该在休息的。
点评：固定词组be supposed to do sth本应该做某事实；suppose的用法中，be supposed to do sth="should" do sth应该做某事。是考查最多的短语。