Pearson Big English 7 Levels Set Bộ tài liệu giáo trình Big English 7 cấp độ, mỗi trình độ bao gồm: Pearson Big English - Tests Pearson Big English - Pupil's book digital (Audio) Pearson Big English CD-ROM Pearson Big English - Audio CD Pearson Big English Teacher Resource Files Pearson Big English - Teacher's book.pdf Pearson Big English - Pupil's book.pdf Pearson Big English - Pupil's book digital.pdf