A good idea suddenly came to me___I could buy some flowers for her birthday.A.if B.which C.when D.that
问题描述：
A good idea suddenly came to me___I could buy some flowers for her birthday.
A.if B.which C.when D.that
答
that ，首先排除if 和when，which常用于定语从句充当主语，而句中缺少成分补充说明idea，所以用that。
答
A
答
D.that 引导同位语从句补充说明idea