根据短文内容判断句子正误。

    I'm John. Jack is my friend. He can play football well. It is winter now. I like making a snowman with him. I can make a snowman well. Kenny is my little sister .She is watching TV with mum in the warm room. I say to Kenny, "Kenny, let's make a snowman outside." Kenny says, "No, I can't make a snowman. I like watching TV in the room with mum."