【单选题】
Our factory has ____ for years.
③
many equipments of fire
【单选题】
Great changes __________ in our institute in the last few years.
【单选题】
Tom has been a vegetarian ____ principle for years.
【判断题】
He has been in china for three years.
【判断题】
The population of beijing has been increased for ten years.
【单选题】
She has worked here_______many years.
【单选题】
The professor has been [填空]at the university for over thirty years.
【单选题】
The population of many Alaskan cities has __________ doubled in the past three years.
【单选题】
Lucy has been a student there for nearly one and [填空] half years.
【单选题】
He ________ Alice for ten years.