Jebb is a professional daredevil and he ...........(risk) his life in extreme sports for many years.
has been risking
I am still in bed. I ......... (be) ill for more than ten days.
have been
He ............(do) nothing since he arrived so he is bored. What can he do to give us a hand?
has been doing
We can't go to school, It .........(snow) all day and the roads are closed.
has been snowing
