问题
选择题
___________ his poem, he didn’t dare to submit it to the professor.
A．Not having polished
B．Having not polished
C．Not polished
D．Not being polished
答案
答案：A
本题考查非谓语动词的用法。分词的否定式是在分词前面直接加not.此处句子主语he是polish的执行者，要用现在分词。