It was on my way back home my teacher made the promise I can do nicely next exam I will buy me a set of LuXun’s Complete Works.
A. when; that
B. when; that if
C. that; why
D. that; that if
网友回答
A. when; that
B. when; that if
C. that; why
(答案→)D. that; that if
解析：本句前半句是一个强调句型, 强调状语on my way back home，用that；第二个空是that引导的同位语从句，用来说明the promise具体内容，同位语从句中又带有一个由if引导的条件状语从句。