He graduated from the university. He started to work for the local hospital soon after that.

• A. No sooner had he graduated from the university than he started to work for the local hospital.
• B. Only after he had started to work for the local hospital did he graduate from the university.
• C. Not only did he start to work for the local hospital but he also graduated from the university.
• D. Having started to work for the local hospital, he graduated from the university.