Is there any linking verbs in the following sentences if so then what:
this river becomes part of the border between the u. s. and canada.
goat island separates the horseshoe falls and the american falls.
a huge amount of water roars over the cliffs every second.
eighty-five percent of water flows over the horseshoe falls.

I think every form of be is a linking verb, so becomes would be one

It could be 1, 2, or 4, depending on the context.1.) they could have had a fight, and she is too humble to say anything further. she wants robert to say something first.2.) maybe he's staring at a computer playing tetris while she's wearing a *really* tight red dress. just sayin' xd3.) is unlikely given that it's only one sentence worth of context long. 4.) it's possible their relationship is more 'mutual hatred' and they tolerate one another.it could be 1, 2, or 4, as long as you can provide sufficient explanation why. remember this as you write!