Можете 6 предложений passive voice: 2 предложения present simple; 2 предложения past simple; 2 предложения future simple.

The big cake was baked by Sam
This building will be demolished next month
My dog has been stolen
The delegates will be met at the station
While a current is flowing through a wire, the latter is being heated
The fish was caught by the seagull

They often help us
He doesn’t play chess well

 I didn’t see her in the shop yesterday
They came to the lecture too early last Monday

We’ll return in 4 hours
It will not be easy to convince him