Mountain climbing _______ be tiring and many people feel sick as the atmosphere gets thinner.
#87119
A
need
B
can
C
must
D
would
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John wants to see me now, but I have so much work on hand that I would rather he ________ tomorrow than today.
#86811
A
should come
B
will come
C
is coming
D
came
They________have arrived at lunchtime but their flight was delayed.(2011·全国 )
#86368
A
will
B
can
C
must
D
should
It's everybody's desire that every effort___________to reduce the pollution in our city.
#87042
A
be made
B
is made
C
will bi made
D
must be made
----Mary broke up with me!----You ______ have forgotten about the Valentine's Day．
#86982
A
shouldn't
B
couldn't
C
needn't
D
mustn't
________ stop advertising, prices would be greatly reduced.
#89209
A
Were they to
B
Could they
C
If they
D
Would they