题目内容

Not having work out the problem,          leave the office.
A.so he was not allowed to B.and he didn’t want to
C.the teacher couldn’t make himD.he couldn’t free himself to
D
状语用的是Not having work out由此可知主句的主语是要执行此非谓语动作。句意: 没有解决这个问题他不想离开办公室。
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