(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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—______ did you sleep last night?—Only five hours. I stayed up late to do my homework.
#77595
A
How soon
B
How often
C
How long
D
How much
It is usually warm in my hometown in April, but it ________ be rather cold sometimes.
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can
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must
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would
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can
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should
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need
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must be
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may be
C
maybe
D
need be