—Is the letter from your mother?—Yes. But she ________ the letter herself, because she doesn't even know one word.
#86535
A
needn't have written
B
can't have written
C
might not have written
D
should not have written
推荐题目
Messages ______ be changed from sound into electricity before they ______ be sent by radio.
#90077
A
must; will
B
have to; can
C
can; must
D
need; may
---Must we leave the classroom now?---No, you _____. You _____ leave after the bell rings.
#86350
A
mustn't; are allowed to
B
don't have to; might
C
needn't; can
D
can't; are supposed to
--- Don’t you think it necessary that he __________ to Miami but to New York? --- I agree, but the problem is __________ he has refused to.
#87999
A
will not be sent; that
B
not be sent; that
C
should not be sent; what
D
should not send; what
I paid a fine of 200yuan for speeding. If only I _________ the traffic rules!
#87126
A
had respected
B
respected
C
would have respected
D
could respect