My _______ name is Guo Ping. We are in the same school.

---who______it be that is knocking at the door? ---It_______be Father, but I’m not sure.

You were stupid to try climbing up there. You ______ yourself.

 --Do you think Jack will lend us a hand?--He is the last one to help others. He _____lend his hand, though.

—Look! A book is on the floor. Whose is it?—It ______ be Rick’s. It has his name on it.