“What is your father doing?”如何回答: A. He is writing a letter. B. He is a teacher.
He’s _______ an e-mail. A.writingB.writeC.written
This is _______ duck. A.myB.anC.you
---__________? ---They are listening to music. A. What do they do? B. What are you doing? C. What are your grandparents doing?
There is a call ____ you. A.forB.on C.at
---Is Amy answering the phone? ---____________ A.Yes, he does.B.No, she is writing a letter.C.No, he isn't.