7、___it?第13页共13页Mary:An________book,amathsbook,twonotebooks,somepencilsandthreekeys.Bob:It'ssoheavy!五、匹配题(共1题;共5分)21.(5分)为下列句子选择正确的图片。A. B. C.D. E.(1)Letmecleanthewindow.________(2)Look!Thebirdisonthelight.________(3)Thereisapictureonthewall.________(4)Thebookisnearthecompute