Look! The light in the room is still on. Mr. Liu          at work.

Jim. You are late again.  ---   sorry. I___   next time.

-- Look at the boy running on the ground. Is it David?
-- It _______ be him. I saw him go to the teacher’s office just now.

I can play basketball，but my sister ________．

You didn’t have breakfast. You ________ be hungry now.

It _________ rain this afternoon, but I am not sure.

Our English teacher said she _______ speak three languages．

—Peter doesn’t mind lending you his camera.
—He __________. I’ve already borrowed one.

I _______ keep dogs for protection, but now I keep them as pets.

--- Must I finish the project now?
--- No, you   _  . You   _  do it this evening.