11.
I'd like to make a complaint. I bought this pen two days ago and it broke down yesterday. I would like to get my money back.
13.
a. They talked very loudly. We could hear every word.
b. I normally start work at 7.00, but it was already 6.45. I knew I was late, so I started driving very fast.
c. She danced beautifully, so she had to win de contest.