She often thought of the lost necklace ______ she and her husband had lived a hard life for ten years.
问题描述：
She often thought of the lost necklace ______ she and her husband had lived a hard life for ten years.
A.for it B.for that C.because of that D.because of which
答
她经常想起那丢失的项链,因为它,她和她的丈夫度过了艰苦的十年.
because of which 是引导原因的状语从句.