【题目】The factory used 65 percent of the raw materials, the rest of which ________ saved for other purposes.
A. is B. are C. was D. were
在线课程【答案】D
【解析】试题考查主谓一致。Which指代先行词materials，当the rest在句中作主语时，谓语动词的单复数取决于后面的名词，如果是名词是不可数名词，用单数。如果是可数名词复数，谓语动词用复数形式。本句中的materials是可数名词复数形式，故选D项。
考点 : 考查主谓一致