Ever since my brother graduated from the university, he _______ in the present company for 15 years and he is now chief engineer of the company  . 

My friend has returned from the UK. She ______ at Oxford for four years, during which we communicated with each other on the Internet.

He____ as a national hero for winning the first gold medal for his country in the Olympics.

Traffic conditions in Beijing ________ for decades. At first people only complained about jams during rush hours，but today every hour is rush hour.

--- Hasn’t Zhao Wei finished filming the movie So Young?--- Yes. She ______ on it for more than half a year.