问题补充：
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
答案：
(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加状语置于句首，要用部分倒装。
