题干
Only when I left my parents for Italy ________ how much I loved them.
A：I realized
B：I had realized
C：had I realized
D：did I realize
答案(点此获取答案解析）
D
Only when I left my parents for Italy ________ how much I loved them.
A：I realized
B：I had realized
C：had I realized
D：did I realize
