---Did you notice someone enter the classroom just now?---Sorry, I didn’t. I _____ my lessons at that time.
--__________ ? -- I like tennis and football best.
--Do you know the woman __________ the red coat? --Sorry, I don’t know.
--Are there any trees __________ the house? -- No, there aren’t.
--__________ your new students? --Yes, __________.
-- Do you like playing __________ football? -- Yes, I want to be __________ good football player.