--- Listen! David is talking happily with his mother in the next room.
--- It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.
| A．should | B．must | C．can’t | D．mustn’t |
相关试题
—How many students are there in your school?
—the students in our school over two thousand.
| A．The number of; is | B．The number of; are |
| C．A number of; is | D．A number of; are |
Tom has grown enough to take care of.
| A．tall; him | B．tall; himself |
| C．old; him | D．old; himself |
There are many tall green trees onside of the street.
A. either, B. both Call D. every
It's time for supper now. Let'sit.
| A．stop having | B．stop to have |
| C．to stop to have | D．stopping to have |
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