Question

19. Only when he grew up and became a father himself    how much his parents had

loved him.

A. had he realized       B.  did he realize 

C. he had realized       D. he realized

Answer 1

19.   B考査倒装句。此处only置于句首并强调时间状语从句， 所以主句用部分倒装。句意：只有他长大自己成为父亲后， 他才能意识到他的父母是多么爱他。