Completethesentences.1.Earthisbecomingmoreandmore________(crowd).2.Everyyear,largenumbersoftourists_____(come)tovisitBeijing.3.Therewillbeno________(pollute)onMars.4.Thenewsmadeher____(feel)sad.5.________(science)areworkinghardtomakethedreambecometrue.DanielwantstoliveonMarsinthefuture.However,Sandyisstillnotsureifshewouldliketo.Thisweek,thereisaTVprogrammeonthistopic.Listentothepreview.HelpSandymakenotesofit.SandyiswatchingtheTVprogramme.Shewantstowritedowntheimportantpoints.Listentothediscussionandhelphercompleteherlists.DisadvantagesWedonotknowifitisreallysafe.Wemight______fromlivingthere.Itis__________fromtheEarth.Thereisnotenoughfood,______oroxygen.Theremightbe__________aliens.DanielandSandyaretalkingabouttheTVprogramme.CompletetheirconversationwiththeinformationinPartsA1andA2.Daniel:Oh,yes.SomestudentssaidlivingonanotherplanetsuchasMarswouldbevery(9)_________.Theycouldstudyat(10)____________,andtravelingin(11)______wouldbefun.Sandy:Theremightalsobemuchmore(12)______foreveryoneonMars.It’stoocrowdedhere.Daniel:However,someotherstudentswereworriedaboutlivingthere.Theysaidtheydidn’tknowifitwouldbe(13)_________.Theythoughttheymight(14)_____becausethere’snotenoughfood,(15)_____oroxygenonMars.Sandy:Theywereevenafraidofaliensthere.Theythoughtalienswere(16)_________andwouldharmpeople.DanielandSandyaretalkingaboutlivingonMars.WorkinpairsanddiscusswhetheryouwouldliketoliveonMars.Usetheconversationbelowasamodel.Daniel:Idon’tthinkso,Sandy.It’sjustadifferentkindoflife.Itwouldbegreattoliveonanotherplanet.Sandy:WhataboutallyourfriendshereontheearthifyougotoMars?Daniel:Iwantyoualltocometoo.Sandy:OK.Ifyouallgotogether,itshouldbefun.1.WouldSandyliketoliveonMars?Why?2.WouldDanielliketoliveonMars?Why?1.开展，执行8.毕竟Completethefollowingsentences.Translatethefollowingsentences.