问题补充：
It was in the factory the TV sets were produced we met for the first time.
A. where, where
B. that, where
C. that, that
D. where, that
答案：
A. where, where
B. that, where
C. that, that
(答案→)D. where, that
解析：考查强调句型和定语从句。It is/was... that是强调句型，去掉后不影响句意；可以强调除谓语外的任何成分。从句the TV sets were produced不缺少成分，排除B、C；说明第一空是where引导的定语从句；第二空是强调句的that部分。句意：正是在那家生产电视机的工厂里，我们第一次见了面。故选D。
