题目

分解因式∶ y2－4＝__________ 答案：【答案】【解析】根据平方差公式：分解即可．解：y2－4＝．故答案为：．Ⅰ.根据句意及汉语提示完成句子【1】There is nothing in the bottle. It's ________(空的)．【2】Most of the parents like to ________(管理，支配) every minute of their children.【3】The child ________(烫) his fingers while playing with fire.【4】Tom felt ________(不高兴) because he couldn't go out to play with his friends.【5】As darkness fell, Clinton gave ________(命令) for his men to rest.