though many times the mistake is still being made by some studentsThough _ many times the mistake is still being made by some students.A.corrected B.being corrected C.correcting D.having corrected

though many times the mistake is still being made by some studentsThough _ many times the mistake is still being made by some students.A.corrected B.being corrected C.correcting D.having corrected
though many times the mistake is still being made by some students
Though _ many times the mistake is still being made by some students.A.corrected B.being corrected C.correcting D.having corrected

though many times the mistake is still being made by some studentsThough _ many times the mistake is still being made by some students.A.corrected B.being corrected C.correcting D.having corrected
这里首先必须是被动语态be corrected的形式,因此先排除了C和D.但此句的主语就是mistake,在后半句中已经使用了正在进行时的被动语态,因而前半句中的be可以省略.再看时态,后半句已经指明是现在时态,并且correct是个短暂性动词,而非持续的,因而要排除正在进行时的被动语态,也就是B选项.综上,此题应该选答案A.

选择B