The new edition of Intermediate Language Practice with Key (and with a CD-ROM) includes PET exam-style exercises.

Vocabulary skills, including dictionary work, developed and practised
New editions now come with CD-ROM for added computer-based practice - ideal for self study!
Special attention to word-building and collocation
Consolidation and extension of grammar and vocabulary in common topic areas, including Travel and holidays, Work and study skills, Tools and technology
Comprehensive grammar index, verb lists and formation rules