Excuse me. I _______ I was blocking(挡) your way.
A. didn't realize B. don't realize
C. haven't realized D. wasn't realizing
I ______ go to bed______ my mother came back home.
A. won’t, until B. didn’t, until
C. will, until D./, when
---She’s never been to Hainan, ________?
---________. She has been there several times.
A. has she； Yes, she has
B. has she； No, she hasn’t
C. hasn’t she； Yes, she has
D. hasn’t she； No, she hasn’t
---Why did you buy a radio?
--- ______ English.
A. Learn B. Learning
C. To learn D. Be learning
---Could you please come to the museum with me this afternoon?
---Sorry, I ______ . I have to take a piano lesson at 2 pm.
A. A.couldn’t B. mustn’t
C. can’t D. needn’t
---We can use MSN to talk with each other on the Internet.
---Really? Will you please show me ________ it?
A. what to use B. how to use
C. how can I use D. where can I use
