问题
选择题
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
Ｄ
考察only引导的倒装句。Only放在句首，且强调状语时，用部分倒装句。本题only放在了句首，且强调的是时间状语从句after the woman had her own child，后面使用部分倒装句，故D正确。