After walking on the zigzag path to the mountain top for a few hours, the tourists gathered under trees shade and down to have a rest.
A. provided; sit
B. providing; sitting
C. providing; sat
D. provided; sat
网友回答
A. provided; sit
B. providing; sitting
(答案→)C. providing; sat
D. provided; sat
解析：考查分词用法和句子结构。第一空的动词provide与the tree构成主动关系，使用现在分词providing shade修饰名词trees;第二空的sat与前面的gathered构成并列关系，都使用过去式的形式。句意：在前往山顶的弯弯曲曲第小路上走了好几个小时以后，游客们聚集在有阴凉的大树下面，坐下来休息。故C正确。