定语从句专项练习题1.Don’ttalkaboutsuchthingsof__________youarenotsure.A.whichB.whatC.asD.those2.Isthisthefactory__________youvisitedtheotherday?A.thatB.whereC.inwhichD.theone3.Isthisfactory__________someforeignfriendsvisitedlastFriday?A.thatB.whereC.whichD.theone4.Isthisthefactory__________heworkedtenyearsago?A.thatB.whereC.whichD.theone5.Thewolveshidthemselvesintheplaces__________couldn’tbefound.A.thatB.whereC.inwhichD.inthat6.Thefreezingpointisthetemperature__________waterchangesintoice.A.atwhichB.onthatC.inwhichD.ofwhat7.Thisbookwillshowyou__________canbeusedinothercontexts..A.howyouhaveobservedB.whatyouhaveobservedC.thatyouhaveobservedD.howthatyouhaveobserved8.Thereasonis__________heisunabletooperatethemachine.A.becauseB.whyC.thatD.whether9.I’lltellyou__________hetoldmelastweek.A.allwhichB.thatC.allthatD.which10.Thattree,__________branchesarealmostbare,isveryold.A.whoseB.ofwhichC.inwhichD.onwhich
