he airport has been in ___ since 2000 (serve)

he airport has been in ___ since 2000 (serve) he has been in english since last 1.he has been in shanghai since he was born. he has been ___the research in monsters ever since He has been in the army since 1999. he has been in english since last 什么意思 the airport has been in_____(服务）since 1998 Mike’s health has been ___ improved since he gave up smoking He has been running since l came. He has been in power ten years since he came to power. 3.——( )has he been in Beijing —— Since he was three years ol He ___(live) in the city since he left his hometown.参考答案是has