48. A. worst B. best C. favorite D. simplest
47. A. carefully B. quickly C. wrong D. right
46. A. Who B. Whose C. Which D. What
45. A. just here B. at once C. at home D. at school
44. A. because B. until C. unless D. if
43. A. apologize B. stop C. understand D. stay
42. A. worked B. waited C. stood D. sat
41. A. tear B. smile C. hair D. sweat
40. A. alone B. still C. up D. down
39. A. caught B. left C. lifted D. placed