Colloquial English - A Complete English Language Course by Gareth King

Download in PDF "Cambridge Practice Tests for IELTS-1" by Vanessa Jakeman & Clare McDowell.

Author: Cambridge

Download in PDF "Longman - Grammar Practice for Elementary Students (With Key)" by Elaine Walker & Steve Elsworth.

Author: Elaine Walker & Steve Elsworth

Download in PDF "A Communicative Grammar of English" by Geoffrey Leech & Jan Svartvik.

Author: Geoffrey Leech & Jan Svartvik