问题
选择题
I made a promise to myself ________ this year，my first year in high school，would be different.(2012·浙江)
A．whether
B．what
C．that
D．how
答案
答案：C
此处是that引导的同位语从句，用来解释说明a promise的具体内容，同时从句中不缺少成分，且句意完整，所以用that引导。故选C项。