I still remember _______ the grand school used to be a abandoned airport two years ago.
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.
17. --- Will someone go and get Mr. White?--- He’s already been ____ .