--Who do you think should answer for Li Tianyi’s behavior?--Actually, I think it is their parents_________.
I don’t like talking on ______ telephone; I prefer writing ______ letters.
She keeps a supply of candles in the kitchen in case of power ______.
Mr. Smith used to smoke ______, but he has given it up.
--- Have you finished your homework? --- No, I ______ my father on the farm all day yesterday.
I often see him steal things from our supermarket. Do you think I ______ report it to the manager?