What, who, whom exercises
Practise how to make questions with what, who and whom, the difference between “who” and “whom”.
The question words “what” and “who” can act both as a subject or an object. We use “what” with inanimate and “who” with animate objects. When it is the subject, we put the main verb directly after “what/who”. If “what/who” is the object in the sentence, we need an auxiliary verb. Besides, in this case we say “whom”. The exercises on this page will help you practise the three question words and better understand the difference between them.