Answer:
Let's study tomorrow, Shall we?
Write an email, Will you?
Everybody clapped, Didn't they?
A little cream is added to the dishes, isn't it?
I am thinner than you, aren't I?
Explanation:
I did the same test a year ago. However, I do not remember much. I believe the answer should be B), that he wished he had a more exciting life.
A and c only hope this helps :)