-Is it polite to speak or laugh loudly ?
-No, I don't think so.
| A．on time | B．at least | C．by chance | D．in public |
___________ study in No.4 Middle School?
A. Did you used to
B. Did you use to
C. Do you used to
It _________ that Yu Mei has changed a lot.
A. look B. seemed C. seems
I think _________ history about China is very important.
A. study
B. studying
C. studied
I won’t leave the room _____ the light _____.
A. when; on
B. with; on
C. with; off
Sam’s been doing his homework since 8: 00, ______ he?
A. isn’t B. doesn’t C. hasn’t