1.______ what to do,he went to the manager for help.
题目
1.______ what to do,he went to the manager for help.
A.Not to know B.Not knowing
C.Not having known D.Having not known
答案
B这是现在分词短语做原因状语的【Not knowing 】what to do,he went to the manager for help.由于不知道该怎么办,他便求助于经理= As he didn't know what to do,he went to the manager for help....
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