آزمون آنلاین زبان انگلیسی 2 - درس دوم | آزمون شماره 810

You must ......... at least one hour before a local flight and two hours before an international one.

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

It is no surprise that Neil didn't learn much in that course ; he actually didn't attend classes as ............................. as he should have.

A person can gain ....................... fast by adding ۵۰۰ calories to a daily diet , eating ۱۸۰ grams of protein each day , and consuming high quality carbohydrates.