Complete the barista's polite question to a very sleepy customer.

"Excuse me, _____ some milk in your coffee, or are you drinking it black to survive the morning?"

The correct answer is do you want.

To form a simple Yes/No question in the present tense with most verbs (like "want"), we use the auxiliary verb do + subject + base verb (Do + you + want).

"Does" is only used for he, she, or it!