Respuesta:
Laura wasn't studying for her exam when I called her last night.
3
no Everyone knows that airplanes and factories generate a lot of air pollution.
4
My mom told me I wasn't afraid of dogs when I was a kid.
5
The beginning of the movie wasn't very scary, but the ending was fun.
6
When Ana was little she didn't do many different activities after school.
7
We didn't know about the storm before it started.
8
David didn't drop the ball in the middle of the game.
9
My little brother fell down the stairs last night. But now it's not right.
10
I hope nothing bad happens to you.
Explicación: