精选优质文档-倾情为你奉上一单项选择 (名词)课堂练习1. Winter is coming on and most of the _ on trees have disappeared. A. leaf B. leaves C. leafs D. leavies 2. All the_ have three _ each. A. hero, photo B. heroes, photos C. heroes, photoes D. heros, photos 3. There were three _ on the table when I entered the room. A. box of apples B. box of apple C. boxes of apple D. boxes of apples 4. _ are hard