[解析]
(1)B.考查上下文衔接.根据下文Both my brother and I love her dearly as she loves us.可知这里想说作为一个母亲,她照顾好了我们,给我们一切的舒适,故选B.
(2)C.考查上下文衔接.根据下文She treats them with patience and teaches them well.可知这里是母亲如何对待学生的,所以此处应该讲述爱学生,关心学生.
(3)E.考查上下文衔接.根据下文Every day,when she comes back home from work,she sets about doing housework,sweeping the living room and bedrooms or cleaning the furniture,and putting everything in good order.可知,后面几句都是讲述妈妈工作刻苦,生活节省.故选E.
(4)D.考查上下文衔接.根据下文She just eats a plain meal outside when she is too busy to cook herself..可知,妈妈从不去昂贵的饭店吃饭.故选D.
(5)F.考查上下文衔接.根据下文This advice of hers will always serve as a guide to my behavior.My mother is great indeed,and I always feel proud of her.我的妈妈确实是伟大的,我总是以她而自豪,可知这里想说我永远不会忘记,并且记在脑海中,故选F.