问题

Is the girl in the red skirt your sister?—No. It _______ be her. She has flown to Australia.
A:can’t
B:needn’t
C:must
D:may
B:needn’t
C:must
D:may
正确答案是:
同类题型
What were you doing at this time yesterday?—We _______ in the classroom.
While I was walking along the lake, I saw some fish _____out of the water.
Mr Wang will sit between____________________.
_____ do you live from your school? —About ten minutes’ walk. [ ]
The teachers often tell their pupils ____ across the road when the traffic light is red.