New Headway pre-intermediate student's book fourth edition.
This the best and flexible for learning English,
We focus on Listening and understanding with tracking tapescripts for each
Listening section of all units all are in Separate.
It is easy to listen one by ones

Include:

Unit 1 : Getting to know you
Unit 2 : Whatever makes you happy
Unit 3 : What's in the news?
Unit 4 : Eat, drink and be merry!
Unit 5 : Looking forward
Unit 6 : The way I see it
Unit 7 : Living history
Unit 8 : Girls and Boys
Unit 9 : Time for a story
Unit 10: Our interactive world
Unit 11: Life's what you make it!
Unit 12: Just wondering...
Writting section unit 1-2
Tapescripts+ Listening
Grammar Reference
Word List
Pairwork Student A
Pairwork Student B
Extra Materials
Irregular Verbs / Verb Patterns
Phonetic Symbols

Hope you enjoy learning English with this easy app!