用所给动词的正确形式完成短文Dearfriend,MynameisBob,Iam11yearsold.Istudyinaprimaryschool（小学）inAmerica.Myschoolisbig.Thereare30studentinmyclass.It'sfinetoday.Myclassmates（同班同学）andI(play)ont

　　用所给动词的正确形式完成短文

　　Dearfriend,MynameisBob,Iam11yearsold.Istudyinaprimaryschool（小学）inAmerica.Myschoolisbig.Thereare30studentinmyclass.It'sfinetoday.Myclassmates（同班同学）andI(play)onthebeach（海滩）.It'saverybeautifulplace.Thewateriscleanandblue.Manybirds(fly)overthesea.Adog(run)afterthechildren.Manypeople(swim).Someboys(play)football.Agirl(sit)onachairand(draw)picture.AndI（sit)onachairand(write)toyou!Whatareyou(do)now?Pleasewritetomesoon.Yours,Bob