4、一段材料,回答第13至第15小题。13.Whatdayisittoday?A.It'sFriday.B.It'sSaturday.C.It'sSunday.14.Howmanykindsofvegetablesdotheybuy?A.Two.B.Three.C.Four.15.Whereisthemilk?A.It'sbehindthehamburger.B.It'sinfrontofthehamburger.C.It'sontheleftofthehamburger.二、单项选择16. David anewshirt?A.Are;ha