64.【2020•上海市】Every year thousands of tourists________the mountain area to relax themselves.
A．visited B．were visiting
C．visit D．have visited
【答案】C
【解析】句意：每年都有成千上万的游客到山区来放松自己。考查动词的时态。visited过去式；were visiting过去进行时；visit参观，动词原形；have visited现在完成时。根据Every year“每年”可知，句子用一般现在时态，主语tourists复数，谓语动词用原形visit。故选C。