(2013·湖南长沙四校二模)—Is the letter from your mother?—Yes.But she ________the letter herself，because she doesn’t even know one word.
#62192
A
needn’t have written
B
can’t have written
C
might not have written
D
should not have written
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She ______ have attended that meeting, for she was doing paperwork in the office then.
#62274
A
shouldn’t
B
mustn’t
C
wouldn’t
D
couldn’t
—Must I do my homework now, Mum?—_______. You can do it tomorrow.
#76333
A
No, you needn’t
B
No, you mustn’t
C
Yes, you need
D
Yes, you must
---Look, Sue is over there. --- That ____ be her. She is in Canada now.
#76816
A
mustn’ t
B
can’t
C
needn’t
D
won’t