【题目】A warm thought suddenly came to me _____ I might substitute the hero to buy some flowers for his mother’s 60th birthday.
A. if B. when
C. that D. which
在线课程【答案】C
【解析】试题分析：考查同位语从句：句意：我突然想起一个温暖的想法，我可以用零花钱给妈妈买些花做为生日礼物。A warm thought是同位词，that连接的是同位语从句，对thought的内容进行说明，选C。