Billy and Sam were twins.They were in the same class.They were both very happy.One day their teacher asked the class to write a composition(作文)"My Mother".Sam wrote one,but Billy was lazy.He just copied his brother's.The next day,the teacher asked Billy why his composition was the same as Sam's."We have the same mother,don't we?" answered Billy.
根據(jù)短文內容判斷句子正誤,正確的填A,錯誤的填B.
（ ）26．Sam was older than Billy.
（ ）27．Sam and Billy were in different classes
（ ）28．The name of the composition was "My Mother"
（ ）29．Billy's composition was the same as Sam's
（ ）30．Billy was not lazy.He was very clever