完形填空Ihaveagoodfriend.HisnameisJohnBrown.Heisaschoolboy....
問題詳情：完形填空Ihaveagoodfriend.HisnameisJohnBrown.Heisaschoolboy.Hisschoolis___1 _____fromhishome.Everydayit___2 __alotoftimetogetthere.Theroadisnotflat,sohecan't____3 ______toschoolbybike.Heoft...