Theearthisoneofthe_______pianetsanditgoesaroundthesun.A.sunB.sunsC.suns'D.sun's
Withtheirhelp,manhasknownthe______(A.earthB.sunC.starsD.satellites)betterthanbeforeandhasdonebetter_______(A.onB.inC.aboutD.with)manyfieldsofscience