module 5 a lesson in a lab i. 单项填空 1．what are you doing out of bed，tom？you’re________to be asleep. a．supposed b．known c．thought d．considered 答案 a [句意为：你不睡觉在干什么，汤姆？你应该睡觉。be supposed to do sth意为：(按规则、惯例等)应该做某事，如：am i supposed clean all the rooms or just this one？我是应该打扫所有的房间，还是只这间？be known to be被知
