He was educated at a local grammar school he went on to Cambridge.A. from whichB. after

问题补充：

He was educated at a local grammar school, he went on to Cambridge.

A. from which

B. after that

C. after which

D. from this

答案：

A. from which

B. after that

(答案→)C. after which

D. from this

解析：此题考查的是“介词+关系代词” 引导非限制性定语从句的用法，因此排除B、D两项。根据题意，此处which 指代前面整个主句，因此介词应选用 after,意为“他在当地的一所语法学校接受教育,之后又去了剑桥”。