【導(dǎo)讀】don'tworkonthefarm,theyworkinf.ittrue?Ican'tbyou.up,whatisinthes?--It'saplane.1.Nowthe______(pollute)isveryserious.themanylonger.—I______(play)basketballwithJim.()4.—HegotanAinlastweek'smathtest.—Itis______!()6.—In2050,whatwilltheworld'spopulationbe?lot______people.meetitonthestreet.