Why is she laughing so much?
Why are they clapping?
Why was the man hiding?
Why were the children crying?
Why does he play with a heavy bat?
Why do these machines make so much noise?
Why did Renuka wear that cap to office?
Why has Madhav taken a leave?
Why have you come?
plz explain........ interrogative adverbs
Interrogative adverbs are used to ask questions.
In the sentence "Why is she laughing so much?" , "why" has been used to ask a question. The question will be answered by giving a reason. Hence, 'why' is an interrogative adverb.