آزمون آنلاین انگلیسی 3 - درس سوم | آزمون شماره 9994

After they ……… their backpacks, they rode away on their bikes.

He --------- and picked the kids up on the way to the airport.

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

The campers will walk around the forest until they ............................... enough firewood to start a huge flame to keep them warm tonight .

From the beginning of human creation , people wished to .......................... like birds.