HOMEWORK CORRECTION: 

Q. Do you think people in different countries study in the same way as you?

A. I don't think so. 

    Because my country's study​​  way​ ​learning method is not effective.

    The education way needs to develop to​ into a better way.

    So, I think everyone has their studying way.​ own ways of studying.

 => Corrected: The sentences are corrected grammatically.

B.

 - It's at 5:30.

=> Corrected: The sentence is corrected grammatically.​​

 - It's 10 minutes before 5 o'clock.

=> This sentence is okay. This is another way of saying it.

   It's ten to five.

​

 - It's at 5 o'clock.

=> Corrected: The sentence is corrected grammatically.​ 

=> Your sentence has a correct grammatical structure, but this has the correct usage/expression.​

   ​It's exactly five o'clock.

             or​

   It's five o'clock sharp.​​