Unit3Isthisyourpencil一、单项选择（共20小题；共20分）1.---Isthisyourjacket?---.A.Yes,itisB.Yes,itisn'tD.No,thisisn'tC.No,itisB.Is;itis2.---thenotebooksinthebox?21cnjy.comD.Is;thatis---Yes,.A.Are;theyareD.ThisisC.Are;thoseareB.No,thosearen'tD.Yes,thoseare3.---oranges?.2-1-c-n-j-yB.I;my;yours---No,theyareapples.D.me;mine;yourA.IsthisB.AretheseC.TheseareD.his;hersB.my;yours4.---Arethoseyourbrothers?D.myself;---.D.himandhersA.Yes,theyareD.fo...