In the present study, there are many different styles and each country has a different way of learning it. Whichever country. And the ability of students in each country it is different.
In the present study, there are a variety of ways, and each country is different, they have different learning styles, but the three countries and the ability of the students in each country, there is a difference.
In the current study there are several forms in each country, and the school has a different country, but the car and the three students in each country, there is a different.