آزمون آنلاین زبان انگلیسی 1 - واژگان (Vocabulary) | آزمون شماره 8802

If they throw stones at you, .......... of throwing back, use them to build your own house.

The Australian researchers have …… an experiment in order to find a cure for the hepatitis disease that has killed millions of people in the past thirty years.

Studies show that if a working environment is pleasant and friendly, the employees’ happiness … and they work better.