Be and Do as Main Verbs in the Past Continuous

How to use do and have in Past Continuous

Pronouns	Affirmative sentences	Negative sentences	Questions
I	I was doing the cleaning.	I was not doing the cleaning.	Was I doing the cleaning?
you	You were doing the cleaning.	You were not doing the cleaning.	Were you doing the cleaning?
he, she, it	He was doing the cleaning..	He was not doing the cleaning.	Was he doing the cleaning?
we, you, they	They were doing the cleaning.	They were not doing the cleaning.	Were they doing the cleaning?

Pronouns	Affirmative sentences	Negative sentences	Questions
I	I was having lunch.	I was not having lunch.	Was I having lunch?
you	You were having lunch.	You were not having lunch.	Were you having lunch?
he, she, it	He was having lunch.	He was not having lunch.	Was he having lunch?
we, you, they	They were having lunch.	They were not having lunch.	Were they having lunch?

We often use the short/contracted form s with these verbs.