This is my sister. ________ favourite colour is pink.

---Why did _____ take Aunt Alice almost an hour to get home ? ---I don’t know . Maybe there was something wrong with her car . 

My keys are in my bag.             keys under that desk aren't mine.

They aren't our books. Are they___________?

—Which sport do you like better, swimming or running?—________ of them.I like horse-riding.