John was fired by his factory and only t
题型:选择题
问题:
John was fired by his factory and only then ________ how wrong he was to be lazy and careless.[ ]
A. had he realized
B. he had realized
C. did he realize
D. he realized
John was fired by his factory and only then ________ how wrong he was to be lazy and careless.[ ]
A. had he realized
B. he had realized
C. did he realize
D. he realized