آزمون آنلاین انگلیسی 3 - درس سوم | آزمون شماره 7018

The majority of health experts are concerned about the air pollution and global warming. They suggest that cars burning fossil fuels have ......... by electric cars as soon as possible.

I wanted to buy a bigger car than this, but it was a case of .......... .

They know much information .......................... when somebody reads a text and pays close attention to the key point.

Animals go to the ............................... reserve to escape from dangers in cities.