Any mistake ,once----,must----.A.find,correct B.found be corrected C.is founC.is found,becorrectedD.it will be found ,be corrected

问题描述:

Any mistake ,once----,must----.A.find,correct B.found be corrected C.is foun
C.is found,becorrected
D.it will be found ,be corrected

B
解析 once found = once (it is) found 一旦被发现

B.found ,be corrected
都表示被动