1.ChairmanMao'sworks____published
a.hasbeenb.havebeen
2.Notonlythewholenation,butthewholeEurope,indeedthewholehumansociety___toalteritsattitudetoracialproblems
a.needb.needs
3.Theprojectrequiresmorelaborthan____becauseitisextremelydifficult.
a.hasbeenputinb.havebeenputinc.beingputind.tobeputin
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