proficiency

Common Mistakes at Proficiency...and How to Avoid Them

Julie Moore

Understanding and Using English Grammar (Student book)

Betty S. Azar,Stacy A. Hagen

English for Everyone: English Grammar Guide Practice Book

DK

A Learner’s Chinese-English Dictionary : Covering the Entire Vocabulary for All the Six Levels of the Chinese Language Proficiency Exam

Muhammad Wolfgang G. A. Schmidt

The Princeton Review - Word Smart II

Julian Fleisher,Adam Robinson

Cambridge Grammar for CAE and Proficiency Student Book with Answers and Audio CDs (2)

Martin Hewings

Grammar and Vocabulary for Advanced Book with Answers

Hewings Martin,Haines Simon.

Iraqpp.b1—b2

Iraqpp.b1—b2

Bilingualism

CARROLL, SUSANNE E.

Upp-Int & Advanced

Second Language Acquisition, 153

Andrew D. Moffat

Language Learning

Kyle Perkins; Diane Larsen Freeman

Language Learning

Sascha W. Felix

Language Learning

Elaine M. Day; Stan M. Shapson

Language Learning

Ewa Buczowska; Richard M. Weist

Foreign Language Annals

Alene Moyer