The house, ______ was destroyed in the terrible fire, has been repaired.
34. ----There's something wrong with the machine. Who is _____? -----None. The machine is too old to work.
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.