find|found|finding

我在外套口袋里意外发现了一些钱。

I ___found some money in my coat pocket.

我在旧外套口袋里发现了一些钱。

I ___found some money in my old coat pocket.

尸体被一个遛狗的人发现了。

The body was ___found by a man walking his dog.

我经常在图书馆找到有趣的书。

I often ___find interesting books in the library.

这位科学家发现解决这个复杂问题很困难。

The scientist is ___finding it difficult to solve the complex problem.