Interrogative Pronouns, which ask questions, as, who, which, what, whom, whose.
They are here used for asking questions, and are, therefore, called Interrogative Pronouns.
|Who built that house?|
|Which is your house?|
|Whose is this book?|
|Which do you prefer, tea or coffee?|
|Which of the boys saw him?|
|What is the matter?|
|Who is he talking to?|
|Who are those people?|
|Whom do you want?|
|Whose is this umbrella?|
|Whom are you playing with?|
The Interrogative Pronouns are used in asking indirect questions.
|I asked who was speaking.|
|Ask what he wants.|
|Say which you would like best.|
|I want to know who told you that story.|