—Is Jack on duty today? —It ______ be him. It is his turn tomorrow.
#76227
A
mustn’t
B
won’t
C
can’t
D
needn’t
推荐题目
(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
According to the school rules, no child _______ be allowed out of the school during the day, unless accompanied by an adult
#62942
A
will
B
would
C
might
D
shall
—Mary’s got crazy and has been sent to the mental hospital. Did you tell her boss about that?—Yes, but I _______her husband first.
#63277
A
can have told
B
should have told
C
need have told
D
must have told
--Is that Wenfeng Road over there? --It ________ be, I’m not sure.
#62714
A
can
B
could
C
must
D
should