【单选题】—You never stay up till midnight, do you? —___________. But I think it’s bad for our health.
【单选题】-----Will you attend tomorrow’s meeting? -----No, _____ I am invited, I will not go there.
【简答题】blended learning给教学系统设计的启示。
【单选题】— Excuse me, is this shop open all day? — ____. It's only open from 9 a.m.to midnight. [ ]
B.
Oh, it's nothing special