He was educated at a local grammar school, ________ he went on to Cambridge.
A.from whichB.after thatC.after whichD.from this在线课程C
解析：
此题考查的是非限制性定语从句。先行词指的是前面a local school，故排除B、D。句意：他在当地的一家文法学校接受教育，之后去了剑桥。如选B，应改为and after that。