单项选择题（共20小题，每题1.5分，共30分）
1．一Mum，I've got a bad headache！
一Oh，______．Take this medicine three times a day and you'll be OK．
A. I’m sorry to hear that B. that's all right
C.You’re welcome D.my pleasure
2．Can you______ the TV a little? Your brother is doing his homework．
A. turn off B．turn on
C．turn up D．turn down
