I have worked with children before, so I knew what _______ in my new job.
33. --- Do you think it’s to rain over the weekend?--- _____.
32. I ____ what he said, but I don’t _____ him.
31. Do you know when did the world _____?
30. The coal we use today should _____ plants and trees.
29. That's all for the party. Let's _____.