finds costs phones answers buys 过去式有s吗可这几个次都由s

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findscostsphonesanswersbuys过去式有s吗可这几个次都由sfindscostsphonesanswersbuys过去式有s吗可这几个次都由sfindscostsphonesan

finds costs phones answers buys 过去式有s吗可这几个次都由s
finds costs phones answers buys 过去式有s吗
可这几个次都由s

finds costs phones answers buys 过去式有s吗可这几个次都由s
题目不是很清楚啊~
find的过去式是found
cost的还是cost
phone的是phoned
answer的是answered
buy的是bought
过去式本身不加s