I use a clock to wake me up because at six o'clock each morning the train comes by my house.
#63505
A
couldn't
B
mustn't
C
shouldn't
D
needn't
推荐题目
Students ________ remain in their seats until all the papers have been collected.
#62519
A
shall
B
might
C
could
D
will
—Can I tell Peter about the news?—No, I don’t want anyone else to know it. You _______keep it to yourself.
#77215
A
must
B
need
C
can
D
may
He ________ to the cinema last night, for he stayed with me.
#62699
A
mustn’t go
B
shouldn’t have gone
C
could not go
D
couldn’t have gone
— Who’s singing in the next room? — It ______ be Mary. She ______ New York.
#75016
A
mustn’t, is in
B
must, has gone to
C
could, has been in
D
can’t, has gone to