Ⅰ.语言知识（共10小题，计10分）
从每小题A、B、C、D中选出一个能填入句中空白处的最佳答案。
( )21. —It’s a bit cold. Would you mind my _________ all the windows?
— Do as you like, please.
A. close B. will close C. closing D. to close
( )22. Teenagers should not _____ .
A. allowed to drive B. be allow to driving
C. be allowed driving D. be allowed to drive
( )23. I play the piano when I was a young boy.
A. wasn’t used to B. wasn’t use to
C. didn’t used to D. didn’t use to
