Past Continuous : I was doing

 Past Continuous : I was doing

A: 

B : Was /were + V. ing is the past continuous.

- What were you doing at 11.30 yesterday? Were you working?

- "What did you say?" "I don't know. I wasn't ;istening."

- It was raining, so we didn't go out.

- In 1994 we were living in Japan.

- Today she's  wearing a skirt, but yesterday she was wearing pants.

- I woke up eary yasterday. It was a beautiful morning. The sun was shining, and the birds were singing.

Spelling

- live     →     living

- run    →    running

- lie    →    lying

C :  am / is / are  +  V. ing (present)    →    was / were + V.ing (past)

- I'm working (now).                    - I was working at 10.30 last night.

- It isn't raining (now).                 - I wasn't raining when we went out.

- What are you doing (now)?        - What were you doing at three o'clock? 

Reference : Basic Grammar in use