Past Continuous

Podmět+was/were+inf.*ing.         

Podmět+wasn't/weren't+inf.*ing

Was/were+ podmět+ inf.*ing? 

Wh- +was/were+podm.+inf.*ing?

I (He, she, it) was sleeping yesterday morning at 5 o'clock. 

I (He, she, it) wasn't sleeping yesterday morning at 5 o'clock. 

Was I (he, she, it) sleeping yesterday morning at 5 o'clock?

Where was he (I,she,it)sleeping yesterday morning at 5 o'clock?

We (you, they) were sleeping yesterday morning at 5 o'clock.

We (you, they) weren't sleeping yesterday morning at 5 o'clock.

Were we (you, they)sleeping yesterday morning at 5 o'clock?

Where were we (you, they)sleeping yesterday morning at 5 o'clock?