Number one. What is Mike doing?<br />Number two. Is your mother cooking dinner?<br />Number three. Can you play the pee-paw?<br />Number four. Whose books are these?<br />Number five. What is your little brother doing?
（1）
A . He's listening to music.B . We're listening to music.C . They're listening to music.
（2）
A . Yes, he is.B . Yes, she is.C . Yes, I am.
（3）
A . Yes, I can.B . Yes, I am.C . Yes, I do.
（4）
A . This is John.B . No, he doesn't.C . No, they're John's.
（5）
A . He is reading a book.B . He reads a book.C . He will read a book.
