If you change your mind after doesn't?

[Milton]

Hi,

Is the given sentence correct? Could we remove as to? Could we start a sentence with suppose?And could we substitute suppose with supposing?

"Suppose you want to ask your friend as to why his brother so lazy."

Many regards

Milton

[Milton]

Hello everyone

I am sorry that I changed my mind about my question after writing down the topic...

So do not be surprised about it

Milton