【题目】A warm thought suddenly came to me ________ I might use the pocket money to buy some flowers for my mother's birthday.
A.if
B.when
C.that
D.which

【答案】C
【解析】句意：突然一股暖意由然而生，我可以用零用钱买些花做为妈妈的生日礼物。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。故选C。