She has been studying English for two hours.They have been working on this project since last week.I have been living in this city for five years.He has been playing guitar since he was a child.We have been waiting for the bus for thirty minutes.The gardeners have been planting flowers all morning.The children have been playing outside all day.Sarah has been running marathons for the past year.They have been renovating their house for months.I have been learning to cook new recipes recently.