I don't forget for ever how many years ago was that I last met her in the coffee bar.A. th

问题补充：

I don forget for ever how many years ago was that I last met her in the coffee bar.

A. this

B. it

C. which

D. when

答案：

A. this

(答案→)B. it

C. which

D. when

解析：remember后的部分是宾语从句,从句中含有一个强调句型,被强调的部分是how many years ago, 所以答案为B。