一Were you at home at 9:00 last night? I called you but nobody answered.—Sorry, I _______ at that time.
Don’t your homework at home, or the teacher may be angry with you.
Mary’s ______ sister is four years older than her.
My sister didn’t watch the movie, did I.
What ______ you ______ when the telephone rang just now?
— are you getting on with your classmates? — Very well. They are all friendly to me.