1.- were watching

2.- was riding

3.- was sailing

4.- was cooking

5.- weren't' traveling

6.- was laughing

7.- were driving

8.- weren't playing

They were watching The Great Escape on TV last night.

She was riding her bike really fast down the street.

Ralph was sailing his boat when the storm came.

I called you yesterday but you were cooking dinner.

We weren't travelling by bus on the day of the accident - we were walking.

I was laughing really hard at the funny joke.

They were drive Sam's car into the mountains.

We weren't playing football yesterday because it was very hot.