17. We (drive) ______ around the parking lot for 20 mins to find a parking space.
18. When we (arrive) ______ at the restaurant, the place (be) ______ full.
19. The waitress (ask) ______ us if we (have) reservations.
20. I (say), "No, my secretary forgets to make them."
21. The waitress (tell)______ us to come back in two hours.
