单项选择题
Speaker A: Want to come over Thursday for supper? Speaker B:（）
A.I really can't. You'll not mind, I think B.Let's put it off till later C.Thanks, but I have to work that evening D.No, I don't want to
单项选择题 Mickey: You look a little pale. Are you OK? Nancy:（）I feel terrible.
单项选择题 A:Can I do anything for you？ B:（）
单项选择题 If you had taken the medicine yesterday, you（）much better now.
