A. an abstract noun
joy is a feeling, so it cannot be B or D
furthermore, it is obviously not a pronoun.
Answer:
When I was in Japan
found everything different.
two years ago my parents bought a new car.
Last summer peter spent his holidays in a summer camp with his friends
they went swimming, they played football and get they visited many interesting places.
My sister got a good job in a bank.
Susan and her cousins came to Portugal ten years ago
Answer:
It is true, I do not see a way it could be false.