Grammar 50:50

The book details:

• Title: Grammar 50:50.
• Author: Marta Kowalik-Alherwy & Maciej Klildzior.
• Publisher: WIR.
• Language: English.
• Format: PDF.
• Size: 9 MB (part 1) + 18 MB (part 2).

Grammar 50:50 is a good and interactive book  in English grammar. It covers may topics and issues related to English grammar. It will help you much understand and develops your English grammar skills in an easy and active way. 
This is the part one of the book :

Part 1==
It contains a wide variety of supplementary exercises for intermediate and advanced English learners .

And here is the part 2:

Part 2==
It contains a wide variety of supplementary exercises for intermediate and advanced english learners. 

Download this book here now 

Part1 

Part 2