آزمون آنلاین انگلیسی 3 - درس سوم | آزمون شماره 10502

The gases, especially methane and carbon dioxide, ………. the Earth’s heat radiation and thus warm the surface.

The electricity powering the lights in this theater is generated by ................... panels.

During my presentation , I'm going to cite the ............................................. of the people who invented the microchip.