Transposer chacune des phrases suivantes à la forme négative.
I had met him before.
I had read that book before.
I had worked in this company before.
She had been asking before.
We had spent the day at the beach.
They had moved to New York.
We had found a lost dog.
He had broken up with his girlfriend.
I had had a car accident in December.
She had argued with her best friend.