．一 ________ woman is Tom’s mother?一The one in the red coat．

—Why does        take Tom an hour to get home?— I don’t know. Maybe the traffic is heavy.

Study hard, and      will be difficult.

I guess Tom and his sister Celia enjoyed ______ at the party.

—I’m too busy. Could you do_______ to help me?—Of course. I can do_______ for you if you want me to.