Select with multiple where

I Have 3 dropdown box:
cmb1, cmb2, cmb3
i was add item to each combobox, so user just choose from selection...


I Have This Code To Select from msaccess db..
My Question:
How To select from student where ID=cmb1.text and name=cmb2.text and class=cmb3.text ?



I hope you know what i mean..Thanks