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题目内容
（大学英语第二册）
20. Williams did not realise his loss for several days because _________.
A. he trusted the dog to find the wallet
B. he had no occasion to feel in his pockets
C. he thought the wallet was in the house
D. he was unconscious all that time
A. he trusted the dog to find the wallet
B. he had no occasion to feel in his pockets
C. he thought the wallet was in the house
D. he was unconscious all that time
参考答案