一单项选择20分
1 －Excuse me, please look at the sign NO SMOKING..
－Sorry, I ____ it.
A. don’t see B. didn’t see C. won’t see D. I haven’t seen
2 －___ you ___ to the radio?
－No. You can turn it off.
A. Did / listen B. Have / listened C. Are / listening D. Were / listening
3 －___ did the teacher talk to you this morning?
－Because I was late.
A. How B. What C. Where D. Why
