第一節(jié)1—5 CCBBB 第二節(jié)1—5 BABCA
    第三節(jié) 1—5 CBBAC 第四節(jié) 1—5 CEDBA
    21—25 CBCBD 26—30 CCCDA 31—35 BDCDA 36—40 CADBC
    41. helps
    42. swimming
    43.eats
    44.kilometers
    45. make
    46. be
    47. am playing
    48.easily
    49. criminals
    50. strawberries
    51. washing
    52.interesting
    53. waiting
    54. message
    55. candles
    56. went
    57. ride
    58. took
    59. expensive
    60. stayed
    61.On the first night
    62. played badminton
    63.feel about the trip
    64. learned a lot
    65. took the (a) bus
    66. one bowl of mutton soup
    67. What kind of noodles
    68. drew many pictures
    69. long brown hair
    70. medium build
    71—75 CABCD 76—80 CABAD 81—85AACBC 86—90 CABGF