I wish my friends could see ________.( )
A:it
B:it's
C:its
阅读短文,根据短文内容选择正确答案。
Hi, I am Li Ping. I am from a small village. There are many houses and rivers in my village. The houses are very beautiful. The water is clean. You can see many fish in the river. There is a mountain near our village. There aren't any pandas in the mountain. But there are many trees on the mountain. A big forest is not far from the mountain. My village is pretty. I like my village.
已知直线l的斜率为2,且过点A(-1,-2),B(3,m),则m的值为( )