The lesson drawn from the coal mine accidents is that safety measures are so important that we _____ take them too seriously.
#87972
A
can’t
B
should
C
mustn’t
D
shall
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I didn’t see her in the meeting room this morning. She ______ have spoken at the meeting.
#89550
A
mustn’t
B
shouldn’t
C
needn’t
D
couldn’t
Just imagine performing such an opera as Turandot in the Forbidden City there _____ be a better setting!
#87965
A
mustn’t
B
shouldn’t
C
couldn’t
D
needn’t
You could have seen Fang Zuming________ yesterday morning.
#86670
A
did you come
B
if you came
C
had you come
D
if you should come
It’s time that you_____with the relief work in the flood-stricken area after the awful typhoon.
#86767
A
must help
B
can help
C
helped
D
have helped