---Look! The light is still on. Is Mr Wu working in his office？---No, it _____ be Mr Wu. He has gone to Nanjing for a meeting.
#74102
A
needn’t
B
mustn’t
C
can’t
D
wouldn’t
推荐题目
--The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?--________ my students have a try?
#62818
A
Should
B
Shall
C
Will
D
May
----I passed the college entrance examination.----Congratulations! You________.
#63093
A
could have studied hard
B
must have studied hard
C
should have studied hard
D
might have studied hard
Being constantly exposed to advertisements is annoying, but it ______ be pleasant sometimes.
#62822
A
shall
B
need
C
can
D
must