( ) the trouble started

A.Hardly I had let than
B.Hardly had I left when
C.Scarcely I had left before
D.Scarcely had I left than
出自:当代英语语法概论

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块