—Look! A book is on the floor. Whose is it?—It ______be Rick's. It has his name on it.
#76529
A
mustn't
B
can't
C
must
D
need
推荐题目
Tom, you ________ leave all your clothes on the floor like this next time.
#63404
A
mustn’t
B
wouldn’t
C
needn’t
D
may not
You __________ tell anyone about this — it’s a secret.
#63512
A
needn’t
B
mustn’t
C
couldn’t
D
wouldn’t
—Whose schoolbag is this?—It ___________ be Mary’s. It has her name on it.
#77796
A
can
B
may
C
will
D
must
—___________ he have to wear his school uniform every day?—No, he ______________.
#75548
A
Must; mustn't
B
Can; can't
C
Does; doesn't have to
D
Do; don't have