Only when the war was over to his hometown.
A. did the young soldier return
B. the young soldier returned
C. returned the young soldier
D. the young soldier did return
网友回答
(答案→)A. did the young soldier return
B. the young soldier returned
C. returned the young soldier
D. the young soldier did return
解析：only修饰的状语置于句首，句子构成部分倒装。