I will never forget the day we worked together in LondonA. whenB. on thatC. whichD. whil

问题补充：

I will never forget the day we worked together in London．

A. when

B. on that

C. which

D. while

答案：

(答案→)A. when

B. on that

C. which

D. while

解析：

这题考查定语从句的用法，先行词是the day，定语从句中缺少的是时间状语，所以用when引导定语从句，句意是：我永远忘不了在伦敦一起工作的日子。选A。