Ответ:
a) Jason had not studied German last year.
Who had studied German last year?
b) Carol had not bought a new dress for the party.
Who had not bought a new dress for the party?
c) I had not lived in that house for three years.
Where had I lived for three years?
d) It had not rained all night.
What had happened all night?
e) They had not been to Saudi Arabia before.
Where had they been before?
f) We had not met our friends in the club.
Where had we met our friends?
g) He had not wasted his money playing cards.
What had he wasted his money on?
h) I had not read that book before.
What had I read before?