PartB第四课时一、看图,选择合适的介词填空。oninunder1.Theballsarethetable.2.Theruleristhebag.3.Thebagisthetable.underinon二、给下列句子或对话选择正确的图片。A.B.C.D.()1.Openthedoor,please.()2.—Wherearethetoys?—Theyareonthefloor.()3.—Arethebooksonthedesk?—No,theyaren't.()4.—Whereisthephone?—It'sonthetable.DABC三、选择合适的选项,补全对话。A.You'rewelcome.B.Wherearemykeys?C.Aretheynearthephone?D.Theyareinthedoor.E.No,theyaren't.Tom:1.________Ilostmykeys.Lily:Aretheyonthedesk?Tom:2.________Lily:3.________Tom:No,theyaren't.Lily:Look.4.________Tom:Oh,yes.Thankyouverymuch.Lily:5.________BECDA