【把下列每对句子合并成含有定语从句的主从复合句：6.Theletterisfrommysister.Ireceivedityesterday.7.Theplaywaswonderful.Wesawitlastnight.8.Thetrainwaslate.ItwasgoingtoNanning.9.Theboyismybrother.Hewashere】

　　把下列每对句子合并成含有定语从句的主从复合句：

　　6.Theletterisfrommysister.Ireceivedityesterday.

　　7.Theplaywaswonderful.Wesawitlastnight.

　　8.Thetrainwaslate.ItwasgoingtoNanning.

　　9.Theboyismybrother.Hewashereaminuteago.

　　10.Thetreeisquitetall.Heisclimbingit.

　　11.Hereisthegirl.Herbrotherworksinthisshop.

　　12.That’sthechild.Wewerelookingathisdrawingjustnow.

　　13.Thisistheboy.Hissisterisafamoussinger.

　　14.Iwanttotalktotheboys.Theirhomeworkhaven’tbeenhandedin.

　　15.Isthatthewoman?Herdaughterisinmyclass.

　　16.Heusedtoliveinabighouse.Infrontofitgrewmanybananatrees.

　　17.Theypassedafactory.Atthebackofthefactorytherewerericefields.

　　18.Thesoldierrantothebuilding.Onthetopofitflewaflag.

　　19.Intheeveningtheyarrivedatahill.Atthefootofthehilltherewasatemple.

　　20.Shecameintoabigroom.Inthemiddleofitstoodalargetable.