---There must be a dozen pens in this house but I can never find one when I need one. --- Keep looking. ____ is sure to turn up.
22. She always ____ her opinion ____ facts.
21. Every morning, the fish mongers stood there ______ with the fishermen for fishes.
20. When Jack arrived, he learned Mary ____ for almost an hour.
19. They didn't _____ the wedding because of a heavy rain.
18. Don't worry! He ____ no attempt to leave. He will stay here to help you.