单词拼写
根据下列句子及所给汉语注释，在答题卡指定区域的横线上写出空缺处各单词的正确形式，每空只写一词。
66. He was active in politics and was strongly against ________ (奴隶制度).
67. English and ________ (美国的) spellings of some words are different.
68. His short-term ________ (记忆) was damaged in the accident.
69. The ________ (正常的) temperature for a human being, no matter in what part of the world he lives, is about 37℃.
