40. can 能 could -
41. cast 铸造 cast cast
42. catch 抓住 caught caught
43. chide 责骂 chid, chided chid, chidden, chided
44. choose 选择 chose chosen
45. cleave: 分裂cleaved, cleft, clove cleaved, cleft
46. 打通clave cloven
47. cling 粘附 clung clung
48. clothe 穿衣 clothed, clad clothed, clad
49. come 来 came come
50. cost 价值 cost cost
51. creep 爬行 crept crept
52. crow 报晓 crowed, crew crowed
53. cut 切 cut cut