----What are you looking for ? ----I’m looking for the pen ____my father gave me last week.
They both have________homework to do,so they may be________busy doing it now.
—What are you doing,Mike?—I’m waiting for the________of the wallet that I found on the road.
A strange thing happened________her last night,so she is afraid to stay at home alone tonight.
—Mike,do you know which CDs belong to________?—I’ve no idea.You may ask Alice.
—________model plane is this?—I think it’s Jim’s.Look,his name is on it.