She stood there____what to do.

问题描述:

She stood there____what to do.
A.knew not
B.knowing not
C.not know
D.not knowing

答案D
knowing的否定式:not knowing
not knowing充当伴随状语,次要动作
相当于
She stood there and didn't know what to do.
她站在那儿,不知道做什么.