I. Подчеркните сказуемое, определите его время. It was raining the whole evening. I worked in the library from three

It was raining the whole evening. — Present Continuous.

I worked in the library from three till five. — Past Simple / Indefinite.

We have known him for three years. — Present Perfect.

They carefully examined the samples which they had sent us.— (examined) Past Simple, (had sent) Past Perfect.  

Now this railroad is the best means of transportation. — Present Simple.