I..根据句意及所给首字母或汉语提示写出下列单词。
1. He got a job in a foreign company after _____________(毕业) from university.
2. It is very difficult to ______________(说服) my father to give up smoking.
3. The role of the railways declined in the ______________(运输) systerm.
4. I am _________________(有决心) to finish the work ahead of time.
