find的過去式怎么寫

　　例句：

　　1、 It's very difficult to find work at the moment.

　　目前很難找到工作。

　　2、It is difficult to find work in the present economic climate.

　　在目前這種經濟大氣候下很難找到工作。

　　3、Someone might find out, and that would never do.

　　也許有人會發現，那是絕對不行的。

　　4、Who would have thought to find you here?

　　誰會料到你在這兒呢？

　　5、Water will always find its own level.

　　水總會自行流平。