2、成,过去完成,将来完成)。Ihavelearned1000wordsbytheendofthisterm.Ihadlearned1000wordsbytheendoflastterm.Iwillhavelearned10000wordsbytheendofnextterm.(D)2.-I’veheardBob______fromhisjourneytoAfrica.-Whataboutvisitinghimtonight?A.hadcomeback B.comingback C.comeback D