Meng Peij ie,an ordinary girl who was among the 10 people awarded the title of “Touching China 2011”,must be both optimistic and strong-minded. Otherwise, she _______  her disabled adoptive mother for 12 years.
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A
mustn't have looked after
B
can't have looked after
C
couldn't have been looking after
D
shouldn't have looked after
推荐题目
You must be a student, ________you? 
#89865
A
wasn’t
B
are
C
mustn’t
D
aren’t
-You must call them every week. -Yes, I _____.
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A
must
B
should
C
have to
D
will
 Look! If we had begun to do the work yesterday morning, we _______ ourselves just like them.
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A
would have enjoyed
B
were to enjoy
C
should enjoy
D
would be enjoying
If it hadn’t rained so hard last night,it_______ so  cold today.
#86461
A
would’t be
B
hadn’t been
C
weren’t
D
wouldn’t have been
All our teachers demand that we ___________.
#87507
A
worked hard
B
work hard
C
will work out
D
should be worked hard