Question

 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

Answer 1

C。

解析:

that在此引导同位语从句，修饰名词thought。此题的难点是，名词thought与修饰它的同位语从句被分离开了。