I don’t remember how many years ago I paid my last visit to the principle of my primary school.
A. it was that
B. was it that
C. it was when
D. was it when
网友回答
(答案→)A. it was that
B. was it that
C. it was when
D. was it when
解析：考查it was that的强调句型。本句强调句子的时间状语how many years ago，且从句要用陈述语序，所以选A。