问题描述：
一道非谓语动词的题!
______,so l had to wait for my wife back.
A.Because my key was lost B.My key was lost C.Losing my key D.Having lost my key
答案是B哟 为何D不行呢 独立主格么?还是因为有了so 就选B呀 求大神解释解释解释~~
______,so l had to wait for my wife back.
A.Because my key was lost B.My key was lost C.Losing my key D.Having lost my key
答案是B哟 为何D不行呢 独立主格么?还是因为有了so 就选B呀 求大神解释解释解释~~
问题解答：
我来补答展开全文阅读