That was really a splendid evening. It’ s years I enjoyed myself so much.A. whenB. thatC.

问题补充：

That was really a splendid evening. It’ s years I enjoyed myself so much.

A. when

B. that

C. before

D. since

答案：

A. when

B. that

C. before

(答案→)D. since

解析：考查固定句型：本句使用的句型是：It is+一段时间since引导时间状语从句，自从…有多久了。由since引导的时间状语从句,如从句中的谓语动词是持续性动词,动作从结束时算起,如从句中的谓语动词是瞬间动词,动作从开始时算起,如：It’s three years since he joined the army.意为“他参军已经三年了。”这句话的enjoy是持续性动词，所以翻译成：那真是美妙的夜晚，我已有多年没有玩得如此愉快。选D。