Present Perfect Continuous exercise - answers

My cousins have been staying with us all the weekend.
My father has been working hard all his life. He's fifty now, and is still active.
We have been waiting for mother since lunch.
She has been bathing in the lake for the last twenty minutes.
This lamp has been hanging in the drawing room since Christmas.
The guests have been dancing since supper.
She has been feeling well for the last two months.
Baby has been sleeping since I came home.
I have been listening to the radio for the last half hour.
I have been looking for this book ever since I heard about it.
She has been reading a book for two hours.
He has been writing this article for three hours.
The fire has been burning all night.
She has been walking in the garden since you went away.
She has been singing this lullaby all the evening.
The rain has been pouring since we left Exeter.