شرکت در آزمون آنلاین زبان انگلیسی 2 - درس دوم | آزمون شماره 5470

Sociologists believes that ……… is one of the problems of the youth of our day.

There is a ........................ in the number of people who are interested in reading books . And this is sad.

America and China must have some plans to ...................... the air pollution.

The little boy was crying non-stop . The dentist said , "I haven't .................. touched your tooth yet."