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
The boy always looks . Now he’s looking at his new drawing.
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Great! It’s one I have ever had.
Please forget your homework. You are supposed to hand it in tomorrow moming.
It was not until dark ______ he found that itwas the correct way to solve the problem.