-Someone’s knocking at the door. Is it your mother?-No, dad. It _____be mom. I saw mom ____in the bedroom just now.
— It’s a pity that I can only live here for two days __________. — Why not stay for another day? I know you have three days off.
Mary writes __________ than __________ boy in her class.
— I don’t know how to do it well. — Don’t worry. Here are some ________.
During the time we made a model plane, lots of things __________.
—I hear Frank is going to ___________ at the school meeting. —Do you know what he is going to __________?