آزمون آنلاین انگلیسی 3 - درس سوم | آزمون شماره 10362

There were a hundred or so men in the water when the ……… started to turn and the current was so strong that it carried some of the poor swimmers.

You need to have some ……… activities to increase your abilities.

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

The function of the stomach is to ...................... food to enable it to pass into the blood circulation in the body. 

Polar bears need a lot of food to eat because they .................... as fat in their bodies for cold winter days .