Practical English Usage by Michael Swan
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Fandorin Thank you Kooyeen. Yeah, I download so many books it drives me mad. After all, I discovered "English Grammar in Use". In the school I used to learn "Essential Grammar in use".Yes, the books recommended by Kooyeen are of a higher level. I suggest you go to bookshops and buy those you find sui
Difference is in the level , isn't it?