Question

Answer 1

43. I came across the photo when I was tidying my room.

44. There is a difference between fridges and freezers.

45. Results should never be made up by scientists.

46. Don't throw away those plastic bags.

47. We had to call a mechanic when our car broke down on the motorway.

48. Dr. Wang's work resulted in a new medicine being developed.

49. There are a number of things that I'd like to invent!.

50. Make sure the bottle is full of water before you start the experiment.