the best：最好的
clever：聪明
common：普通
Time flies fast. 时光飞逝。时间过得真快啊。
clap：拍掌

（1）Does Mrs. Xie’s son usually sing for her?
（2）Who do you think is the best son? Why?

Who is the best son?

Three moms are talking about their sons. 
Mrs. Liu:” My son is the best son. He can sing very well. He always sings for me.” Mrs. Zhang:” My son is the best son. He dances well. Everyone says he is a clever boy.” Mrs. Xie doesn't say anything. Mrs. Liu and Mrs. Zhang ask Mrs. Xie:” What about your son? ” Mrs. Xie says:” My son is a very common child.” Then three moms go to wash their clothes. Time flies fast. 
The three sons go home from school. Mrs. Liu's son sings a song for his mom. Mrs. Zhang's son begins to dance. He dances so well that they all clap. Mrs. Xie's son says nothing but goes straight to Mrs. Xie and helps her wash clothes. Who do you think is the best son? Yes, Mrs. Xie's son is the best son. He is helpful at home.