句型转换：I spend ten yuan on this book.this book cost me ten yuan .
答案中的cost为什么不加s,会的来
人气：483 ℃ 时间：2020-02-10 03:48:03
解答
应该是加s的,除非是过去式,过去式cost还是cost
要不就是前边应该是spent
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