下面短文中有10处语法错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（∧）,并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
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11处起）不计分。

One rainy day while I was walking home with one of my friend, a trunk came
friends
to a stop besides us. The driver put the window down and offered us a unbrella
beside                                           an
because he found we were wet through. I stood there and couldn’t believe in
i\n
that a complete stranger is so thoughtful. The man insisted, so I grateful
was                           gratefully
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
but
everyone else. It was a lesson to us that it was possible ∧give without expect
someone/somebody                             to        expecting
anything in return.