آزمون آنلاین زبان انگلیسی 1 - درس 3 | آزمون شماره 8979

Analog computers are general – purpose ......... which employ laws of physics for performing mathematical operations.

The ……… of new machines caused farming to become mechanized and this mechanization ended the jobs of many farm workers.

Usually , we ............................... differently when others are watching us .

Dany didn't want his friends to know anything about his cancer, so he ........................... as it nothing had happened.