填入正确的人称代词和物主代词。
（1）You are a pupil. Is ________ brother a pupil, too?
（2）Mary works in a book store. ________ likes work very much.
（3）John and I are in the same school. ________ go to school together.
（4）She is a friend of ________. We got to know each other two years ago.
（5） I have many friends. Some of ________ are good at English.
（6）     —May I use bike?
—Sorry, ________ is broken.
（7）Don’t put your school things here. Put ________ away.
（8）We can’t find our shoes. Can you help ________?
（9）These are not my planes. You should ask them. Maybe they are ________.