Business Builders 4, 5, 6
Emmerson, Paul

Situational Grammar Practice

Die Fundgrube für den Englischunter
Clarke, David

Education
Issues 35

Good, better, perfect!

English in Mind 2 Teacher's Book
Puchta, Herbert / Stranks, Jeff

Dictionary of Current Idiomatic Enh
Cowie/Mackin

The Heinemann English Grammar

Grammatisches Wörterbuch
Welsh

Let`s Keep Talking
Ramsey