Раскройте скобки и употребляйте глаголы в Past Indefinite или Present:
They (to be) free last Sunday.
He (to be) to Moscow this port yesterday.
The motorman (to check) the valves.
She (to do) her work in time.


Ответы и объяснения

They been free last Sunday.
He been to Moscow this port yesterday. 
The motorman  checked the valves.
She done her work in time.

Past Indefinite