I told them what___was to do a) each b) every c) one

I told them what everyone had to do. - Я сказал им, что каждый должен делать.

Did I tell what everyone had to do?

Who told them what everyone had to do?

What did I tell them?

Whom did I tell what everyone had to do?

Did I or did you tell what everyone had to do?

Did I tell what everyone or Tom had to do?

I told them what everyone had to do, did not I?

I didn't tell them what everyone had to do.

They were told what everyone had to do.