问题
选择题
The case of his death is being ________ and will be found out before long.[ ]
A. looked up
B. looked for
C. looked into
D. looked on
答案
答案：C
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The case of his death is being ________ and will be found out before long.[ ]
A. looked up
B. looked for
C. looked into
D. looked on
答案：C