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postman c_____letters from this postbox at 4:00 every afretnoonpostman做主语,一般是单数还是复数

题目详情
postman c_____letters from this postbox at 4:00 every afretnoon
postman做主语,一般是单数还是复数
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答案和解析
collects/carries/catches/第一个最合适
楼上忘变三单了