答:B。can’t表示“一定不”,从后一句可做出推断。
42. Jack _________ yet, otherwise he would have telephoned me.
A. mustn’t have arrived
B. shouldn’t have arrived
C. can’t have arrived
D. need not have arrived
答:C. can’t have arrived 表示对过去情况的推测,Jack一定投有到。相当于 If Jack had arrived, he would have telephoned me~
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