下列短文共有十处错误，请在原文中改出。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。
Dear George,
It’s been a week before we left your family and we are now back home. Thank you very much for showing them around your city and providing us for the wonderful meals.
After we said goodbye to you, we went to Washington D.C., which we stayed for three days. My brother was so much fond of the museums there that he begged my parents to staying another couple of day. However, my father had to return to work on Monday so we fly back last Saturday afternoon. It was really a nice experience.
If you’d like to make trip to our city some day, I will be more than happier to be your guide.
Yoursbefore-since
网友回答
(答案→)before-since
解析：题目主要考查学生对名词、人称代词、固定搭配、动词短语、时态、定语从句等的掌握情况。
【小题1】考查固定句型。现在完成时+since+含有过去时的句子，意为“自从......已经多久了”，故把before改为since。
【小题2】考查人称代词。根据第一句“we are now back home”可知，这里指代的是“我们”，故把them改为us。
【小题3】考查固定搭配。provide sb with sth= provide sth for sb给某人提供某物，故把for改为with。
【小题4】考查非限制性定语从句。we stayed for three days不缺少成分，先行词是Washington D.C.，表示地点，故把which改为where。
【小题5】考查固定搭配。so much如此多，后跟不可数名词，这里修饰的是形容词fond，so...that构成固定句型，much多余，故去掉much。
【小题6】考查固定搭配。beg sb to do sth乞求某人做某事，故把staying改为stay。
【小题7】考查名词。a couple of几个，another couple of days再待几天，故把day改为days。
【小题8】考查时态。根据had to可知，应该使用一般过去时，故把fly改为flew。
【小题9】考查固定短语。make a trip to sp到某地旅行，故填在trip前加a。
【小题10】考查固定短语。more than在此意为“很，非常”，后跟形容词、非常原级，故把happier改为happy。