英语汉译英问题 3？

1）over. (prep) 表示一段时间，V+ over the tea  and breakfast  “在...期间做了...”。七点起床该是点时间，得用at.

2）如下更好：Efforts have been concentrated on through investigation and severe punishment of the major cases of the bribery and corruption offences. 

3）out of... 有跟多用法的，  it's out of our own need of development that..  此处out of 表示事物发生的原由。