更新时间2018-12-18 00:32:18
1. But when I paid for it.
这是一个单独的句子,when 用作特殊疑问词,在这里应该是引导一个特殊疑问句,所以,
正确的句子是: But when did I paid for it ? (但是我什么时候付钱的呢?)
2. l met at the gas station 是定语从句,修饰先行词 couple,缺失引导连词 who,
所以,正确的句子是:
I recognized him, and to my surprise, it was the older couple who l met at the gas station.
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