题型:单选题 知识点:
题目:
( )23. —Listen!Who _______ in our classroom? —It must be Jack. He _______ very beautifully.
A. sings; is singing
B. is singing; is singing
C. is singing; sings
( )23. —Listen!Who _______ in our classroom? —It must be Jack. He _______ very beautifully.
A. sings; is singing
B. is singing; is singing
C. is singing; sings