问题补充:
It is difficult to tell exactly the saying began, but it is probable that it was in the theater or movie industry.
A. where
B. when
C. why
D. that
答案:
(答案→)A. where
B. when
C. why
D. that
解析:句意:很难以确切的分辨出这个俗语出自哪里,但是它很可能来自电影行业。tell之后引导宾语从句,根据意思判断应该是where引导的宾语从句。故选A.