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【单选题】
S he had been working for 10 consecutive days -- she .A.
must be very tired
B.
must n't have been very tired
C.
mustn't be very tired
D.
m ust have been very tired
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A.
.96
B.
1.04
C.
.92
D.
1.02
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A.
With a knife.
B.
On the edge of some metal.
C.
On some glass.
D.
On a piece of paper.
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