-Finish the following dialogue with one word each:
22-Omar : What are you …(1)…………………… Ahmed?
Ahmed : I'm …(2)…………………… my teeth.
Omar : Do you brush them every day?
Ahmed : Yes, I …(3)……………………
Omar ; That's good. If you brush them every day they will stay…(4)…………
Ahmed : Yes, of course and clean, too