问题补充:
Only when Michael had his own child making a kid grow up healthily was too hard.
A. he realized
B. had he realized
C. did he realize
D. he had realized
答案:
A. he realized
B. had he realized
(答案→)C. did he realize
D. he had realized
解析:考查only的倒装句:only后面接状语,如副词,介词短语,状语从句,后面的主句是部分倒装,助动词,be动词或情态动词要放在主语前面,这句话only后面接的是when引导的时间状语从句,主句用倒装,句意:只有当迈克游客自己的孩子,他才意识到让孩子健康的成长太难了。主从句的时态是一致的,选C。