问题标题：
1.Duringtheafter-schoolactivities,somestudentsareplaying____ontheplaygroundwhiletherest____doingsomehomeworkintheclassroomsa.happy,areb.happily,isc.happily,ared.happy,is2.Canyoudosomethingtoprotectthebirds（改同义句）A
问题描述：
1.Duringtheafter-schoolactivities,somestudentsareplaying____ontheplaygroundwhiletherest____doingsomehomeworkintheclassrooms
a.happy,areb.happily,isc.happily,ared.happy,is
2.Canyoudosomethingtoprotectthebirds（改同义句）
Areyou______dosometingtoprotectthebirds
3.AmyjoinedtheDancingClublastyear（同上）
Amy____________theDancingClublastyear.
4.Alargenumberofbirds____(come)toZhalongforashortstayeveryyear
请回答问题最好说明理由,
沈奕回答：
1C修饰动词PLAY用副词,THEREST其余的人,复数
2ableto(can=beableto能)
3tookpartin(join=takepartin参加)
4come(alargenumberof‘许多’作主语,谓语动词用复数
段兴龙回答：
谢谢！还有一个thebirdswillbeindangerifwedonothingtohelp划线提问划线的是beindanger____will___tothebirdsifwedonothingtohelp?
沈奕回答：
What,happen
段兴龙回答：
还有问题3是4个空，要怎么改呢？
沈奕回答：
tookactivepartin
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