摘要： I didn't hear the phone last night. I asleep. A. must be B. should have been C. must have been D. should be 分析:此题中“must + have + p.p 表示对过去的推断.虽未证实.但十分有把握.意为“一定 .“准是 ,“should + have + p. p 表示过去该做而实际未做的事.含有后悔或责备的意味.根据前句语境.可能判断出C是正确的.
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225. I didn’t hear the phone last night. I _____asleep.
A. must be B. must have been C. should be D. should have been
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A．must be |
B．must have been |
C．should be |
D．should have been |
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