شرکت در آزمون آنلاین زبان انگلیسی 1 - درس 1 | آزمون شماره 12713

We have some plans to ………. Iranian cheetahs which are endangered wild animals.

.Governments of many countries have established laws to ............................ the air, forests and sea resources and to stop environmental pollution

There is a Chinese proverb which says that the best doctor prevents illness ; a/an .......................... doctor visits when the illness is about to happen ; and the unskilled doctor treats your present illness .