问题
选择题
It is reported that great efforts made to ________ the case have paid off.[ ]
A. run into
B. look into
C. run after
D. look after
答案
答案：B
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It is reported that great efforts made to ________ the case have paid off.[ ]
A. run into
B. look into
C. run after
D. look after
答案：B