21. I o                 this morning, because my alarm clock didn't go off.

22. Luckily, the people trapped in the b                 building were helped out.

23. He wasn't dead after the traffic accident(交通事故) and still a                 now.

24. Mr. Wang a                 that we we'll have a picnic tomorrow.

25. What a f                 I was to believe he is a good man!

26. The beautiful scene of that mountain village will probably d                 for ever because of pollution.

27. Her d                 about the wild animals will change people's traditional idea about their behaviors.

28. After the bell r                , all the students rushed out of their classrooms.

29. The doctors kept on saving the old man t                 he woke up.

30. Perhaps he'll dress himself up as a clown in the c                 party.

31. I have never o                , but yesterday my alarm clock didn't go off.

32. The child b                 his fingers while playing with a match yesterday.

33. He was still a                 after he experienced the terrible earthquake.

34. Mr. Wang a                 that we would have a picnic tomorrow.

35. It's reported that lots of people were f                 by the hoax.

36. I didn't take photos of the UFO, because the UFO had d                 before I took out the camera.

37. Many new d                 were made with the help of a compass.

38. She often wears a pair of ear r                .

39. We played from breakfast t                 lunch.

40. A friend once invited me to a c                 party.