—Do you know whose dictionary it is?—It ________ be Ann’s. Look! Her name is on the first page.
#74986
A
must
B
could
C
might
D
can
推荐题目
—Listen ! Helen is singing in the next room.—It __________ be Helen. She is in Tianjin now.
#76500
A
can’t
B
mustn’t
C
may not
D
shouldn’t
—Have you invited Alice to our party?—Yes. But she _____ come; she is busy nowadays.
#63198
A
must not
B
might not
C
should not
D
need not
－Mom, I’m leaving. －It’s raining. You’d better ________ an umbrella with you.
#75719
A
to take
B
take
C
not take
D
taking
Without gravity, we _____ walk on the ground as freely as we do now.
#63085
A
couldn’t
B
mustn’t
C
shan’t
D
needn’t