请帮忙并说出理由,你很好
1.NobodybutLilyandLucy____thecleaningintheclassroom.
A.doB.hasC.havedoneD.does
2.Mikedidn'tpasstheexam,hewassad.Let'sgivethispresent_____.
A.cheerherupB.tocheerherup
C.cheerupherD.tocheerupher
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