---What a nice MP3! How long ______ you ______ it? ---Only two days.
A. have, bought B. did, buy
C. have, had D. are, having
Chinese _______ by more and more people in the world now.
A. speaks B. spoke
C. is speaking D. is spoken
If he ______ harder, he will catch up with us soon.
A. study B. will study
C. studies D. studied
---May I smoke here?
---No, you ______. Look at the sign, it says, “No smoking!”
A. couldn’t B. needn’t
C. mustn’t D. won’t
---How do you like the dress?
---It’s beautiful, and it fits me well. _______ I like it very much.
A. Or B. So
C. But D. Because
. ---Which is _______, the sun, the earth or the moon? ---Of course, the sun.
A. big B. bigger
C. biggest D. the biggest
