--Is the man standing outside the teacher’s office Mr. Zhou?
--No, it ______ be him. He has gone to Hong Kong for an academic conference.
| A．mustn’t | B．can’t | C．needn’t | D．couldn’t |
—What does the Sign 
on the bottle mean? —It means “________”.
A. dangerous B. save water C. recycling
Hurry up, _________ you will miss the bus.
A. or B. and C. but
We _________ finish our homework on time.
A. is supposed to B. be supposed to C. are supposed to
My mother often stops me from _________ TV for too long.
A. watch B. watching C. to watch
—Can you tell me _________ in today’s newspaper？ —Sorry, _________.
A. something important, nothing important
B. important something, important nothing
C. something important, important nothing