- 問題詳情:FirstLadyMichelleObamaisabigfanofvolunteering.Volunteeringmeansworkingforfreetohelpsomeoneelse.Mrs.Obamasaysvolunteeringisveryimportant.“Itshouldbepartofeveryone’slife,”shesays.Manyteensagree.Theysaythathelpingothersfeelsgreatandmakesadiff...
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