假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（^）。并在其下面写出该加的词。
删除：把多余的词用斜线（/）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者（从第11处起）不记分。
One rainy day while I was walking home with one of my friend, a truck came to a stop besides us. The driver put the window down and offered us a umbrella because he found we were wet through. I stood there and couldn’t believe in that a complete stranger is so thoughtful. The man insisted, so I grateful accepted the offer, thanked him and watched the truck disappear down the road. This man might need the umbrella himself, and he preferred to give it to everyone else. It was a lesson to us that it was possible give without expect anything in return.
知识点：短文改错
One rainy day while I was walking home with one of my friend, a truck came to a stop
friends
besides us. The driver put the window down and offered us a umbrella because he found
beside an
we were wet through. I stood there and couldn’t believe in that a complete stranger is
去掉 was
so thoughtful. The man insisted, so I grateful accepted the offer, thanked him and watched
gratefully
the truck disappear down the road. This man might need the umbrella himself, and he
but
preferred to give it to everyone else. It was a lesson to us that it was possible∧give without
someone to
expect anything in return.
expecting