40. fail (失败)--- fill (装满)
41. great (伟大的)--- grade (年级)
42. house (房子)--- horse (马)
43. lend (借出)--- land (土地)
44. left (左)--- lift (电梯)
45. light (轻的;灯)--- night (晚上)
46. lesson (课)---- listen (听)
47. month (月)---- mouth (嘴)
48. parent (父/母亲)--- present (礼物)
49. play (玩)--- plane (飞机)
50. pull (拖)--- full (满的)
51. race (赛跑)--- rice (大米)
52. sad (悲伤的)--- side (边)