1.Theyhadalreadyhadbreakfastbeforetheyarrivedatthehotel.2.Shehadfinishedwritingthecompositionby10：this00morning.3.Hetoldmethattherehadbeenanargumentbetweenthem4.Andthissemester,wehavelearnedthepasttense,thepastperfecttenseandthefuturetenseandsoon.5.Theysaidthatproductioncostshadbeenreduced.6.Alltheticketshadbeensoldoutwhentheyarrived.7.Wehadhardlyreachedtheschoolbeforeitbegantorain.8.BythetimeIgottothebusstop,thebushadalreadyleft.9.Ericdiedafewdaysagoandtheseyears,hehadlivedasarecluse.10.Hedied,thoughgreateffortshadbeenmadetosavehislife.11.WehadlearnedovertwothousandEnglishwordsbytheendoflastterm.12.TheyhadplantedsixhundredtreesbeforelastWednesday.13.BeforeshecametoChina,GracehadtaughtEnglishinamiddleschoolforaboutfiveyears.14.Ihadlearned1000Englishwordstillthen.15.Theyhadarrivedatthestationbytenyesterday.