---________?

---They're on the sofa.

1. A.
   Where are my books
2. B.
   Where is my book
3. C.
   Where's my books
4. D.
   Where my books are

“________?”

“They're on the sofa.”

[　　]

-----Where ______ my books ?   ------They’re ____  the sofa.

A. is, in            B. is , on          C. are, in          D. are, on

-----Where ______ my books ?   ------They’re ____  the sofa.