The effect a teacher has _______ children may be greater than that of their parents.

依次填入下列各句横线处的成语，最恰当的一组是（ ）①_______________，有言必践，传送着中国的极大诚意，展示了一个负责任大国的襟怀，赢得了世贸成员和国际舆论的佳评。②出了事故，首先应调查原因。“没有调查就没有发言权”，这是决策的科学化问题。古今之市领导，似乎还在车上，就作出重大决定了。而且_______________，权重如天。③在推销的过程中，应该认真准备，力求表达得精炼准确，_______________ ，以达到最佳效果。

Before you decide to le

We were caught in the heavy traffic jam. Otherwise, we _____ on time.

What terrible air! —Yes. It is time to protect the ________.