49. A. is B. has C. are D. have
48. A. trouble B. difficulties C. chance D. choice
47. A. at a time B. at one time C. all the time D. at times
46. A. to B. across C. between D. along
45. A. that B. which C. what D. when
44. A. eyes B. books C. texts D. feelings
43. A. learned B. forgotten C. thought D. listened
42. A. they B. he C. she D. we
41. A. Before B. After C. If D. While
40. A. develop B. make C. give up D. pick
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