I commend it specially to your attention.
Clear, carefully graded exercises not only teach new vocabulary and expressions but also (what is the series' unique selling proposition) enable learner to use the items with precision, correctness and confidence.
Typical errors in usage, collocation or register are precluded from the start; near synonyms are clearly distinguished so that informed user can use them correctly and naturally.
Moreover, extra exercises on CD consolidate and reinforce the words and expression to such an extent that, typically, learners feel they have overlearned and this is what leads them to fluent usage.
Without exaggeration this books are worth their price.
opinia o Oxford Word Skills Advanced