参考答案1-10：ACBBCBBAAC 11-20: BACBACCACB 21-30:ADBABBBDAD 31-40: CBADCFABDE41-50：DABBCDACCD 51-60:BADAADBDCC61.fining 62. achievement 63.am taking 64.that65.him 67.posted 68.to 69.so 70. especially71. houseworks改为housework 72. 去掉I 前面的and73. how改为what 74. idea前面添加an75. thoroughly改为thorough 76. another改为other77. it改为them 78. mop改为mopped79. surprising改为surprised 80. his改为her
