______ so kind as to close the window?
______ so kind as to close the window?
Explanation
The phrase "Would you be so kind as to" is a polite way of making a request.
"Would you be" is the correct structure for this polite form of asking.
The phrase "Would you be so kind as to" is a polite way of making a request.
"Would you be" is the correct structure for this polite form of asking.