----What a beautiful picture!
----It’s years I painted a picture as beautiful as this one.
A. that
B. since
C. when
D. before
网友回答
A. that
(答案→)B. since
C. when
D. before
解析：句型：it is\has been +段时间 +since…,自从…多长时间了。 “真漂亮的一幅画！”“我好长时间没有画过像这一幅一样漂亮的画了。” 选B