He might have been killed ___the arrival of the policeA except for B but for C with D for 选哪一个 为什么?

问题描述:

He might have been killed ___the arrival of the police
A except for B but for C with D for
选哪一个 为什么?

B 要不是
要不是警察来了,他可能已经被杀了。
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B but for 要不是,若不是
全句意思:要不是警察的到来,他本有可能被杀了.