问题补充:
Only after the woman had her own child how difficult it was to be a mother.
A. she realized
B. had she realized
C. she had realized
D. did she realize
答案:
A. she realized
B. had she realized
C. she had realized
(答案→)D. did she realize
解析:句意:只有那个女人有了自己的孩子之后,她才意识到做一个母亲有多难。Only+状语置于句首,主句要用部分倒装,故排除A&C;由因为状语从句中使用了一般过去时,主句的时态要发生在从句之后,因此排除B,故答案选D。