They have been studying Spanish together since last summer.
She has been rescuing cats since she was 17 years old
She has been doing exercise since 7 a.m
He has been fishing since 6 a.m
She has been losing weight since last year.
They have been playing basketball for 2 hours
Sarah and her friends have been shoping for 3 hours.
They have been learning to cook for 3 months
