Unit4Where'smyschoolbag一、单项选择（共20小题；共20分）1.Myquiltisthebedandmyshoesarethebed.C.under;inA.in;onB.on;underD.on;in2.---Whereareyourshoes?---They'rethefloor(地板)theroom.C.on;underA.in;onB.on;inD.in;between3.Thepencilboxisthebedbuttheschoolbagisthebed.A.in;onB.on;onC.of;underD.on;under4.---Isyourbaseballyourroom,Mike?21·世纪教育网---Yes,it'sA.on;inmybed.B.in;underC.on;underD.in;in5.---myruler?---It'sunderthechair.A.WhereB.Whe...