Course: Tiếng Anh Tăng Cường lớp 7 - Tam Đảo, Section: Week 32. Unit 10. Lesson C: Culture. Gateway to the New World – Lesson D: Grammar. Present perfect: negative and interrogative

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Week 32. Unit 10. Lesson C: Culture. Gateway to the New World – Lesson D: Grammar. Present perfect: negative and interrogative