Past Simple vs Past Continuous 2

I (not see) Susan last night. I think she (sleep) so deep.

• didn't see / were sleeping

• didn't see / was sleeping

• didn't see / wasn't sleepin

"While she was doing her homework, her father came home."

• Correct

• Incorrect

"When David (see) Tom, he (not work), he (sleep) at his desk."

• seeing / did not work / did not sleep

• saw / was not working / was sleeping

He (study) in Salamanca when the Civil War (begin).

• were studying / begun

• studied / was beginning

• was studying / began

The dog were barking, but nobody camed.

• Correct

• Incorrect