This TOEFL book is different because it uses an integrated vocabulary learning system called recycling. For each set of ten vocabulary words you will complete four quizzes:
a multiple-choice vocabulary quiz
a sentence-completion quiz
a spelling quiz
a typing quiz

This method keeps you integrating and applying new words using six TOEFL skill sets: reading listening speaking writing spelling and typing. Recycling will help to remember each new word phrase and idiom more effectively so it can be applied more proficiently on test day. 

Bonus material
typing lessons and tips to improve accuracy and speed
learn how to structure opinion-based and fact-based TOEFL essays
audio CD to practice listening skills