______ , he could not carry the rock to the other side of the river.

A．Strong while he was

B．No matter how strong he was

C．As strong he was

D．However he was strong

独白一般是在人物之间外部冲突的间歇阶段，人物之间的冲突退居幕后，人物的内心冲突上升为主要地位的时候，才运用的语言形式。