C1 English Grammar

Hueber

Destination C1 & C2 Grammar and Vocabulary. Student's Book with Key

Collins

Collins Work On Your Grammar C1                  

English Language Academy

English Grammar: Suitable for levels A1-C1 - Includes exercises with key (English Edition)

PODIPRINT

Reading CAE: Eight practice tests for the Cambridge C1 Advanced

Cambridge University Press

English Grammar in Use Book with Answers and Interactive eBook: A Self-study Reference and Practice Book for Intermediate Learners of English [Lingua inglese]

CAMBRIDGE

C1 Advanced. Authentic Examination Papers. C1 Advanced 4. Student's Book with Answers. Per le Scuole superiori. Con espansione online. Con Audio: Authentic Practice Tests

Bonacci

Gramm.it for english-speakers. Livello A1-C1    

English Language Academy

English Grammar Practice : 100 C1 Phrasal Verbs and Expressions (English Edition)

Trinity Whitebridge

Grammar Files C1. Upper Intermediate (B2) to Advanced (C1)

B2-C1 ENGLISH VOCABULARY AND GRAMMAR BOOSTER: PRACTICE ACTIVITIES FOR ENGLISH STUDENTS (English Edition)