1st image is uninteresting to me... the subject of power lines (or telephone lines) in the air doesn't do anything for me as a main focus
2nd one i think i'd find it more interesting as a B&W if the focus was the chairs and their shadows. not the trees and sky in the background.
3rd is pretty cool subject, i think a different angle (perhaps circle to the right a little more?) might have brought out the relationship between the tree and the fire hydrant a little better, but the best of the group IMO, because it's interesting. nature interacting with manmade stuff, etc.
4th, again, not enough contrasting Blacks and whites to make this interesting. perhaps the lack of a phone in the phone area is interesting, but it's not really conveyed in the shot. plus with the B&W format, the blown out sky that takes up a lot of the pic is distracting. however good work on getting a different vantage point of the subject.