1. What had happened to the crew?

4. The answers were hidden in the ship.

8. No one except the diver had seen the ship.

12. She dove skillfully into the deep water.

17. What would she discover at the bottom?

21. The mystery would be solved by the diver.

25. Ashes from a volcano had buried the city.

29. The people had escaped before the disaster.

33. Now scientists were digging around the area.

37. Their discoveries explained daily life in the city.

41. The house had beautiful paintings on the wall.

45. Revise the sentences

46. A detailed picture appears on the computer screen.

47. On the computer screen, a detailed picture appears.

48. The mapmaker presses a few keys on his keyboard.

49. On his keyboard, the mapmaker presses a few keys.

50. Maps in beautiful colors are often produced.

51. In beautiful colors, maps are produced.

52. Their ships can travel safely through narrow places.

53. Through narrow places, their ships can travel safely.

54. They use maps during their exploration.

55. During their exploration, they use maps.

57. The house had beautiful paintings on the wall.