How to use "becomes" in a sentence

I can see that the trail ahead becomes more difficult

This becomes my routine.

If I read the temper of our people correctly, we now realize, as we have never realized before, our interdependence on each other; that we cannot merely take, but we must give as well; that if we are to go forward, we must move as a trained and loyal army willing to sacrifice for the good of a common discipline, because without such discipline no progress can be made, no leadership becomes effective.

And so he waits, and the evening becomes darker, and he thinks that there are now only one or two people left in the small old church

[Note: Here the diary becomes impossible to read

In it, she said, "One is not born, but rather becomes, a woman." With this famous sentence, Simone was the first thinker to write about sex and gender