Question

..... I open my window? (choose the correct auxiliary verb)

Answer 1

when it blows air,✔✔✔✔✔✔✔

Answer 2

The 5 main auxiliary verbs are Why, what, when, where and how.

There verbs and used mostly at the beginning of a question sentence.

In the given question, the auxiliary verb which best fits into the context is How.

The complete sentence by using the auxiliary verb will be as follows: How I open my window?

It appropriately fits the sentence context.