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。
I like riding my bike. Though it is not very new, but it is         1. ______
my best friend. I find very convenient to go anywhere with a  2. ___
bike. Ride gives me not only exercise but also pleasure. I                 3.________
use my bike mostly on summer when the weather is warm                4._______
and dry. It can very unpleasant in winter when it is cold and           5._______
rain is pouring down. It can also be very danger. Of course             6.________
I will be very careful on my bike. In facts, accidents are not           7.________
the only problem. One day I went to school and come back           8._________
to find his front wheel was missing. It was a long walk to                9._______
the repairer’s shop. Now I have two strong locks.                             10.________