第二节 单词，短语填空（选用所给单词或短语的适当形式填空，每小题1分，满分10分）
deny, accompany, dozen, entry, take chances, go about,
serve as, accuse …of …,date back to, keep track of
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86. Children under 14 must be _______ by an adult when they are travelling.
87. Despite the threat of war, people _______their business as usual.
88. The shop assistant was dismissed as she _______cheating customers.
89. A lot of people here are afraid _______to do new things.
90. I’d like to buy many _______pencils, but I doubt if I could afford them.
