1.The Wallerstein study indicates that even after a decade young men and women still experience some of the effects of a divorce occurring when a child.
(A)occurring when a child
(B)occurring when children
(C)that occurred when a child
(D)that occurred when they were children
(E)that has occurred as each was a child 正确答案是D 没有问题 想问下 D中的they were 能不能省略呢 像这种过去时态的主语和be动词是不是也在省略范围之内呢? 谢谢~