She followed the receptionist down a luxurious corridor to a closed door,____ th

游客2023-10-26  35

问题 She followed the receptionist down a luxurious corridor to a closed door,____ the woman gave a quick knock before opening it. (2017)

选项 A、on which
B、but when
C、wherein
D、then

答案 A

解析 2017年第12题。复合句连词。空格前后分别是一个简单句,因此可以先排除B。D项then为副词,不能连接句子,必须增加连词形成and then结构才能连接两个简单句,故排除D。C项wherein是副词,意为“在那里,在其中”,不符合句意,如:This is a riding school wherein(=in which place)we could learn the art of horsemanship.A选项on which是“介词+关系代词”引导的非限制性定语从句,which指代主句中的a closed door,介词on在从句中和动词搭配,gave a quick knock on the door,故正确答案为A。
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