问题
选择题
It was a pity that the great writer died with his work _______.
A．to be finished
B．finished
C．unfinished
D．not having been finished
答案
答案：C
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It was a pity that the great writer died with his work _______.
A．to be finished
B．finished
C．unfinished
D．not having been finished
答案：C
④ CH3COOH ⑤ CH3CHO ⑥ CH3CH2CH2OH 