Вставить предлоги в пропуски They give people who work ____ words an effective way ____ creating documents . _____ these

Заполнить пропуски в предложениях предлогами:1. They give people who work (WITH) words an effective way (FOR) creating documents . 2. (FOR) these and other reasons , the computer is one (OF) the most interesting and important machines ever invented .