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

Living English Structure
Allen

Durchstarten Englisch Testbuch
Zach, Franz

Commercial Correspondence
Ashley, A.

If-Clauses & Co Die Nebensätze
Groß, Achim

Practice in English
Posner, M.

English Synonyms
Ruff

GOING FOR FINALS
Kammerhofer, Zangerl

A Practical English Grammar
Thomson, A.J./ Martinet A.V.

Britain Today
Musman