改正下面短文中的错误。对标有题号的每一行作出判断：如无错误，在答题卡该行右边横线上画一个勾（√），请在有错误的地方增加、删除或修改某个单词。
注意：1.每处错误及其修改均仅限一词；
2.原行没有错的不要改。
Climbing is my favorite sport. I’m very much fond             1.________
of it. A day, early in the morning my friends and I          2.________
put on our sports shoes and start off. After climbing for     3.________
half an hour, we got to the top of the mountain. Where      4.________
we got a good view. To the north, a big river across the    5.________
city. There were many ships sail busily. A lot of beautiful   6.________
tree were there, too. The sun started to go down, and it     7.________
was time to go back. On the way home, we were           8.________
talking and laughing, full excitement. We had              9.________
a good time on that day.                                10.________