你好,同学 正确答案：选D.since 即：That was really a splendid evening.It's years ( since ) I enjoyed myself very much. 翻译：那确实是一个极为满意的晚上,我好几年没有这么快乐了.（自从我上次快乐到现在有几...It's years什么意思？It's years 就是 有好多年了 的意思