读下列短文，选择正确答案。

    Today was hot. I went to the farm with my parents. There was a river near the farm.

    I went to the river with my dog .We ran and played . Suddenly I dropped（掉进）into the river ,"Help , Help„„"My dog jumped into（跳进）the river and swam to  me , Ten minutes later ,

    I was saved（救）. I was grateful to him. We are good friends.