شرکت در آزمون آنلاین انگلیسی 3 - درس سوم | آزمون شماره 314

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

Places to live ……… unless you call a real estate agent.

Because the man didn't have enough money to pay the electric ...........................  , the power company shut the lights off at his house .

.When on patrol, the police officers carry a small ........................... the size of an old camera that takes fingerprints, photos and an eye scan of people they meet

We should know that in relation between two countries , the trade is not only exchanging ................................ but every aspects of life.