In this country it is required that anyone who wants to settle here to pass this kind of

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A. has
B. must have
(答案→)C. have
D. will have
解析：考查虚拟语气。require/request/order/mand等表示命令、要求的词，后面的从句一律使用虚拟语气，即should+动词原形，should常省略。that从句的主语虽然是单数，但根据should+动词原形可知，省略should后保留have。故选C。