我在班公事去记录今天的事情.Translate it into English.

问题描述:

我在班公事去记录今天的事情.Translate it into English.
Please provide a better answer and explain in mandarin.
1)I stay in office to record everything happened today.
2)I stay in office to record down everything happened today.
3)I stay in office to record down everything happened in today.

choose 1
第三个明显不对,today前面怎么可以加介词呢.
record是一个及物动词,所以不用加down,排除第二个选项.