Well Spoken
Ramsey

Pollution
James, Barbara

Oxford Advanced Learner's Dictionay
Hornby

English Tenses
Schomaekers, Hiltrud

Teacher's Resource Pack
Focus on modern Business 3

Englisch: Vorsicht, Fehler!
Freese

BHS Englisch Übungsbuch 1.
Durchstarten

Practice in Text Analysis

Genetically Modified Food
Issues 47

South Africa
Brickhill, Joan