شرکت در آزمون آنلاین زبان انگلیسی 1 - زبان انگلیسی 1 | آزمون شماره 9811

Nobody knows exactly why the giant animals called dinosaurs died out. Most scientists think that its reason, most …, is the sharp decrease in the temperature of the earth.

It’s the teacher’s duty to train the students in a way that they can be able to … their views and interests.

The virus may reappear repeatedly in school buildings until there is either a vaccine or … testing.

The president has given people some … for the improvement in all aspects in the new year.