Question

【题目】John _____ there since the year before, so he _____ them.

A. had worked…knew B. had worked…had known

C. worked…knew D. worked…had known

Answer 1

【答案】A

【解析】句意：自从前年约翰就在这儿工作，因此他知道他们。根据时间状语since the year before可知第一空用过去完成时，其结构是had done的形式。第二个空是一般过去时态，know的过去式是knew。根据题意，故选A。