Question

After visiting China，most of the foreign friends said they would never forget the time ________ they had spent in China.

A．that

B．what

C．when

D．at which

Answer 1

A

试题分析：考查定语从句，先行词是the time，定语从句中spend是及物动词，缺少宾语，用that引导定语从句，句意：到过中国后，很多外国人说他们永远忘不了在中国度过的时光。选A。
点评：考查定语从句一要看先行词，而要看从句的成分，如果缺少主宾表，要用that或which如果缺少状语，要用关系副词where，when或why。