—The pollution problem here seems to get more and more serious.--Yes. Something_____about it.
#76572
A
must do
B
must be done
C
is doing
D
had been done
推荐题目
—Mary broke up with me! —You____ have forgotten about the Valentine's Day．
#63262
A
shouldn't
B
couldn't
C
needn't
D
mustn't
What do you mean, there are only ten tickets? There _________ be twelve.
#62262
A
would
B
should
C
will
D
shall
Please remind your grandpa to take medicine on time, for a man of his age ____be very forgetful．
#63647
A
need
B
must
C
shall
D
can
------Is Peter here yet? ------Not yet, but he ___________ be here soon. He is usually on time.
#74734
A
would
B
need
C
must
D
should
—Must I return the book tomorrow?—No, you ________.You can keep it for three days.
#63361
A
mustn't
B
needn't
C
can't
D
may not