--What on earth are the police busy with? ---They have been looking into how the plane crash _______...
2023-01-13 21:23:52 76次 2011-2012学年江苏省高三10月月考英语题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
--What on earth are the police
busy with?
---They have been
looking into how the plane crash _______.
A. came out B. came up C.
came down D. came about
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