Scientistshaveobtainedmoreevidence___________plasticisfindingitswayintothehumanbody.
A、whatAnearlytypewriterproducedlettersquicklyandneatly;thetypist,_____couldn'tseehisworkonhismachine.
Thedoctorshareshisphonenumberwiththepatients__________theyneedmedicalassistance.
China'simageisimprovingsteadily,withmorecountries__________itsroleininternationalaffairs.
Thefactthatsomanypeoplestillsmokeinpublicplace_______thatwemayneedantionwidecampaigntoraiseawarenessoftheriksofsmoking.
—Let'stakeacoffeebreak.
—__________We'vebeenworkingforhours.
