—How are you getting along with your project?
—I was about to give up when an idea occurred to me ________ I could work with my roommate Tim.
A．that
B．how
C．why
D．whether
—How are you getting along with your project?
—I was about to give up when an idea occurred to me ________ I could work with my roommate Tim.
A．that
B．how
C．why
D．whether
A解析：从句I could work with my roommate Tim 句意完整，不缺少成分，因此使用that 引导同位语从句，解释说明idea 的内容。