A warm thought suddenly came to me I might use the pocket money to buy some flowers for

问题补充：

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：

A. if

B. when

(答案→)C. that

D. which

解析：考查名词性从句。本题考查that引导的同位语从句，解释说明名词thought，故选C。