--Could you please _____ in the room?
--Oh， I’m sorry.
A. not smoking B. not smoke
C. not to smoke D. don’t smoke
_____ have you been swimming? For five years.
A. How many times B. How long
C. How often D. How much
It’s really cold today， ______ ?
A. does it B. doesn’t it C. isn’t it D. is it
---He’s never been to an aquarium.
---_______.
A. Neither have I B. Neither do I
C. I never too D. I don’t too
Would you mind ______ those old jeans?
A. don’t wear B. not to wear
C. aren’t wearing D. not wearing
I have been skating _______ nine o’clock.
A. for B. since C. at D. From
