7、四个选项中选出可以填入空白处的最佳答案,并把答题卡上对应题目的答案标号涂黑。21. —Lookatthesky,isthat________star?—No,itis________LEDkite.A.a;theB.a;anC.a;aD.an;a22. —Mary, could you please tellmeyour home________? I wanttosendaboxofapplestoyou.—Thanks.Hereitis.A.member B.name C.address D. map23. Wewereenjo