a.

1. Jason had not studied German last year.

2. Had Jason studied German last year?

b.

1. Carol hadn't bought a new dress for the party

2. Had Carol bought a new dress for the party?

c.

1. I hadn't lived in that house for three years.

2. Had you lived in that house for three years?

d.

1. It hadn't rained all night

2. Had it rained all night?

e.

1. They hadn't been to Saudi Arabia before.

2. Had they been to Arabia Saudi before?

f.

1. He hadn't met our friends at the club.

2. Had our friends met at the club?

g.

1. He hadn't wasted his money playing cards.

2. Had he wasted his money playing cards?

h.

1. I hadn't read this book before

2. Had you read this book before?