1.In1620,abouthalftheUSA____forests.
A.wascoveredB.wascoveredbyC.werefilledwithD.coveredwith
2.Apresent___mebyfriendonmybirthday.
A.isgivingB.wasgiventoC.isgivenforD.willgivento
3.____anewlibrary___inourschoollastyear?
A.is,builtB.was,builtC.does,buildD.did,build
4.Anaccident___onthisroadlastweek.
A.hasbeenhappenedB.washappenedC.ishappenedD.happened
5.Alotofthings___bypeopletosavethelittlegirlnow.
A.aredoingB.arebeingdoneC.hasbeendoneD.willbedone