用所给词的适当形式填空

1. He wasn't allowed ____ (go) swimming after school.    

2. ____ (with) your help, I can't get more information.    

3. Traveling by plane is ____ (many) comfortable than traveling by train.    

4. I like Yi Zhongtian because he is a _____ (knowledge) teacher.    

5. You can't take anything from here without_____ (permit).