English Grammar 1
Henrichs-Kleinen, Ellen

Englisch for You 2
Ribitsch, Horst

Increase your wordpower
Woxbrandt / Kunze

Essential Grammar in Use
Murphy, Raymond

The New Cambridge English Course 2
Swan, Michael/Walter, Catherine

Britain. A short introduction
Bourke

Telekolleg Englisch Band 3

Elementary English Grammar
The Heinemann

Pollution
James, Barbara

Let's Get Talking
Ramsey