As a couple ,the Smiths can always make the decision to work through their problemsA. co

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A. conventional
B. courageous
(答案→)C. conscious
D. pulsory
解析：conventional传统的 courageous有勇气的 conscious有意识的、神志清楚的 pulsory义务的，本句意为：史密斯夫妇总是能做出理智的决定去处理他们的问题。