1.buy 2.take 3.swim 4.come 5.do 6.are 7.drink 8.eat 9.fly 10.go 11.have 12.run 13.ride 过去式
问题描述：
1.buy 2.take 3.swim 4.come 5.do 6.are 7.drink 8.eat 9.fly 10.go 11.have 12.run 13.ride 过去式
答
bought took swam came did were drank ate flew went had ran rode