相关boyHeli的文学知识

问题详情：完形填空     IhaveagoodfriendnamedPeter.Heisan  1  boy.HelivesinatallbuildinginthecityofWashington,D.C.Thereareforty-fourfloorsinthe  2 .Heliveson  3 floor,soheusesalift(电梯)to...