I can't stand it any more/longer(2选1,下同).
I can no longer/more stand it.
I can no longer/more endure it.
I can't endure it any more/longer.
忍受,bear、tolerate、put up with、abide亦可;suffer理论上可,但(个人)不推荐
I can not stand it !
I have enough of it。(意为。我受够了)
I can not stand it anymore
it is enough to be suffering