شرکت در آزمون آنلاین انگلیسی 3 - درس سوم | آزمون شماره 407

..................................... energy sources such as hydropower , wind or water operate differently to generate electricity.

The research study didin't have a scientific ................................ , but also included religious topics.

. As she passed the restaurant her stomach rumbled, as if to  .............................. her she hadn't eaten since lunchtime

After many searches in the Internat we found out that there was no ............................... that proves people and governments are hurrying to solve air pollution .

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