Past Continuous - Forma

Affirmative I/she/he/it was watching.
you/we/they were watching.

Negative I/she/he/it wasn't (was not) watching.
you/we/they weren't (were not) watching.

Question Was I/she/he/it watching?
Were you/we/they watching?

Short answers Yes, I/she/he/it was.
Yes, you/we/they were.