問題詳情

13. Irene: Listen! Who _____ in the music classroom?Howard: The girls from Class 242 _____. Their voices are so beautiful.
(A) sing; is
(B) singing; are
(C) is singing; are
(D) are singing; are

參考答案

答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)