1. 用方框中所给短语的正确形式填空

happen to; at present; with the development of, make contributions to; graduate from

1. （1） After college, Li Qiang started working as a doctor in a local hospital.
3. （2） We have a great many things to do , so we can't wasle any time.
5. （3） When I was shopping in the supermarket last night, my English teacher be there too.
7. （4） computer science, more and more work will be done by computers.
9. （5） Late Premier Zhou Enlai the People's Republic of China in his lifetime.