题目内容：

English.choose the best answer.
--Is that the company you often speak of?
--Yes,just the one___you know I worked in for 15 years.
A.that B.what C.where D.which

优质解答

A.这是个定语从句,先行词是不定动词 the one 在从句中做 worked in 的宾语,所以用that 引导.you know 是插入语.