在实际工作中，我们应满腔热情地支持新事物的成长壮大，最根本的原因是新事物[ ] 

①始终得到广大人民群众的拥护和支持

②比旧事物强大，具有优越性

③符合客观规律，有广阔的发展前途

④代表事物发展方向，有强大的生命力

A．①②

B．②③

C．①④

D．③④

根据下列句子的意思及所给的汉语提示，写出空缺处单词、固定短语或固定搭配的正确形式。

1. He didn't succeed until he tried the ______ (十二) time.

2. Tony fell off his bike and hurt himself ______ (严重地).

3. "I've ______ (长大). I can help with some housework." she said to her parents.

4. Please ______ (关掉) the lights before you leave.

5. I don't want to make a wrong ______ (决定) and regret it later.