Do you have problems choosing between the pronouns who and whom? Many people do. Here's a tip: use who as the subject of a verb and whom as the object of a verb or preposition.1. can possibly be calling me at this time of night?whowhom2. did Sergei visit yesterday?whowhom3. To can we turn to find the answers to these questions?whowhom4. shall I say is calling?whowhom5. Cara wondered voters would choose as the next leader of the country.whowhom6. Isabella is the girl solved the problem.whowhom7. shall I say sent me?whowhom