a)
The programme ends in joy if the masterpiece is genuine and in disappointment if it is a fake.
e)
- That the painting was by Lucian Freud
- Because of his bad relationship with Denis
- He loves it. It reminds him of Freud's early drawings. He loves the shadows and the exaggerated face.
- No, he has always loved it, whether it was a fake or not. Because he has been given so many different opinions over the years as to whether it's a fake or not, but has always continued to love it whatever people said about it.
- He is going to leave it to be sold after he dies and have the money go towards helping young artists.
f)
- gobsmacked (= so surprised that you do not know what to say)
- swept along (= very interested or involved in sth, especially in a way that makes you forget everything else)
- biting [our] nails (= very nervous)
- fallen over backwards (= fainted)
- clicked (= suddenly became clear)