Teacher's Resource Pack 3
Zekl, Claudia ua

Intermediate Listening
Timesaver

Telekolleg Englisch Band 1

Advanced Exercises in Grammar 1
Thomson, A.J./ Martinet A.V.

Britain 1982

Presenting facts and figures
Kerridge, David

Grammar Activities
Timesaver

Commercial Correspondence
Ashley, A.

Situational Grammar Practice

Internet-Wörterbuch
Langenscheidt