83.have→has 84.√ 85.spent前加is
56.And→But 57.many→much 58.seem→seems 59.√
60.well后加with 61.whom→who 62.by→on 63.去掉第二个to
64.long前加as 65.with→at
76. language → languages 77. its → their 78.去掉 not
79. ∨ 80. themselves → itself 81.Peoples → People
82. friend → friends 83. become→becomes
84. few 前加 a
56. unusually→unusual
58.去掉the 59.
61. filled→full或 of→with
63. 在him
85. other → another 57. plant→planting或 to plant had→has 60.√ 62. by→on 或去掉his