(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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These days some young people just ________ work hard because they have got used to the easy life provided by their parents.
#62289
A
mustn’t
B
won’t
C
mightn’t
D
shouldn’t
You ________ play with the knife. You ________hurt yourself.
#75972
A
mustn’t; may
B
mustn’t; must
C
shouldn’t; must
D
can’t; should
Their answers are exactly the same. One of them ___ from the other.
#62605
A
must copy
B
must have copied
C
should copy
D
should have copied
The manager demanded that the work________ within three days.
#62720
A
was finished
B
had been finished
C
be finished
D
finished
E-Commerce ______ mislead customers at times even though it's more convenient and faster in general.
#62706
A
shall
B
should
C
can
D
must