I.单项选择(10分)
（ ）1. Would you mind opening the window? _______.
A. Thank you B. Yes,please C. No, not at all D. I’ll be glad to
（ ）2. Would you please ____ talk in class?
A. don’t B. not C. not to D. won’t
（ ）3. He won’t telephone us until he _____ back .
A. come B.comes C. came D. will come
