شرکت در آزمون آنلاین زبان انگلیسی 1 - زبان انگلیسی 1 | آزمون شماره 13900

I have always told my students that it’s perfectly ……… to feel nervous before a test.

We are now able to predict the ... patterns of the climate change and make better decisions about it.

While Mary and her friend … in the park, their old friend, Sarah, … them.