proved elusive proved essential proved false proved fatal proved fruitful proved fruitless proved futile proved guilty proved he proved helpful proved herself proved highly proved highly successful proved him proved him right proved him wrong proved himself proved i proved impossible proved inadequate proved inconclusive proved ineffective proved innocent proved insufficient proved invaluable proved it proved its effectiveness proved its worth proved itself proved me proved me right proved me wrong proved my point proved myself proved negative proved not proved nothing proved oil proved once proved otherwise proved positive proved possible proved problematic proved quite proved reserves proved right proved satisfactory proved so proved so popular proved something proved successful proved that they proved the existence proved them proved them right proved them wrong proved themselves proved they proved to be a difficult proved to be a great proved to be a major proved to be a success proved to be a very proved to be correct proved to be difficult proved to be effective proved to be effective in proved to be false proved to be fatal proved to be much proved to be one proved to be particularly proved to be popular proved to be right proved to be successful proved to be the best proved to be the case proved to be the most proved to be too proved to be true proved to be unfounded proved to be unsuccessful proved to be useful proved to be very effective proved to be very popular proved to be very successful proved to be very useful proved to be wrong proved to have proved to me proved today proved too proved too much proved true proved unfounded proved unsuccessful proved us proved useful proved useless