15It’s only by travelling or living in a country and getting to know its inhabitants and their language _________ one can find out _________ a country and its people are like

I finished my ______________ examsyesterday.

A survey about protecting the Earth was ____________ in our school last Friday.

Did you return the book to me Why can’tI find it anywhere — ________. You were writing a letter atyour desk at that time.

Even on a cold day he prefers ______ out to play football ______at home．[ ]