I、1、doctor
2、programmer
3、pilot
4、sure
5、medicine
II、1、violin ; violinist
2、cook ; cook
3、piano ; pianist
4、driver ; drives
5、scientists ; science
6、colleges ; universities
7、actor ; acting
8、sounds
9、education
10、harder
III、1、grow up ; an engineer
2、keeps on practicing basketball
3、sure about
4、study education
5、write articles ; magazines and newspapers
6、take acting lessons
7、writing stories
8、cooking school
IV、1、does ; want to be
2、going to be
3、Where
4、they want to be
5、is good at
V、1 - 5 D B A E C