来自陈云华的问题
Mustwecleantheclassroomnow?No,youneedn't.It______afterschool.A.maycleanB.mustcleanC.needbecleanedD.canbecleaned[正确答案是D,为什么不选C]
Mustwecleantheclassroomnow?No,youneedn't.It______afterschool.
A.maycleanB.mustcleanC.needbecleanedD.canbecleaned
[正确答案是D,为什么不选C]
