47. A. everything B. nothing C. something D. anything
46. A. of B. in C. over D. at
45. A. inventions B. discoveries C. ideas D. dreams
44. A. found B. stored C. shown D. covered
42. A. run B. fix C. place D. plant
43 A. gives B. reads C. offers D. explains
41. A. need B. should C. would D. will
40. A. think B. develop C. solve D. deal
39. A. produced B. bought C. used D. learned
38. A. That B. Because C. For D. As
37. A. why B. what C. how D. when