阅读下面短文，从每题所给的A、B、C、D四个选项中选出能正确回答所提问题或完成所给句子的最佳答案。

    Mrs. Smith is a teacher. Her house is not far from her school and she walks to school every day. All the students like her. Mrs. Smith walks to school on a very cold and windy morning. The cold wind cuts her face, and big tears go down her face. She arrives at the school and goes into the classroom. It is nice and warm there and Mrs. Smith is happy. But then a small boy looks at her and puts his arms round her and says, "Don't cry, Mrs. Smith. We all love you."