Jane has been so in getting used to everything that she hasn’t had time for social activ

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A. confused
B. worried
C. devoted
(答案→)D. occupied
解析：考察形容词。Confused 困惑的 worried 担心的devoted 献身的  occupied 忙碌的，be occupied in 忙于干某事
句意为，简一直在忙于适应，以致于她没有时间从事社交活动。