--   do you spell ring?       --________. 

---Will you stay at home until your sister comes back? ---Sorry, I _______. I have a meeting and have to go in ten minutes.

There _____ be any difficulty in passing the road test since you have practised a lot in the driving school.

________you play the violin?

 — Listen! Is that Linda singing in the next room?— No, it ________ be her. She is still in Shanghai.