问题补充：
The other day I buy a pair of leather shoes in a shoe shop. The seller told me he would give “three guarantees” for the shoes. And only four days later, the shoes worn out. So I was angry and returned to the shop hoped to get my money back. I told the seller what had been happened to the shoes. When she knew that I had kept the shoes for four days, he refused, to which I was surprised. I asked him why he didn’t keep his promises. “Do you understand the ‘three guarantees’?” the seller said. “It means the shoes can only be kept in three days!” How a foolish explanation of the “three guarantees”!buy 改成bought
答案：
(答案→)buy 改成bought
解析：
【小题1】The other day几天前，和过去时连用：buy 改成bought
【小题2】前面说老板给鞋子三包，但4天后鞋子就坏了，表示转折：And 改成But
【小题3】考查词组：be worn out坏了：shoe后面加were
【小题4】用现在分词做伴随状语：hoped 改成hoping
【小题5】happen是不及物动词，不能用被动：去掉been
【小题6】人称不一致，前面用的是she：she改成 he
【小题7】考查词组：be surprised by/at对…惊讶。to 改成at(或by)
【小题8】考查名词的数，老板许了一个诺言：promises 改成promise
【小题9】in 改成for，for+一段时间，有多长时间
【小题10】考查感叹句：修饰名词用what，How 改成What
