Jack is an English boy. He is a good student. He is eleven. Now he is in a blue coat. Linda is Jack's sister. She is a nice girl. She is fourteen. Now she is in a green dress. Lucy and Lily are from the USA. They are students, too. They are in yellow coats. They look the same. Jack, Linda, Lucy and Lily are good friends. Jack, Lucy and Lily are in the same school. But Linda is not in the school. They all like China. ,. Jack, Linda, Lucy and Lily are   _  .
good teachers good sisters good brothers good friends