Bài 1: Chuyển các câu sau từ thì hiện tại hoàn thành sang thì quá khứ đơn sao cho nghĩa k thay đổi 1. How long have you lived here ? 2. The volunteers have provided free food anh fresh water to homeless people since yesterday 3. The doctor has quitted his job in the local hospital anh moved to the central hospital for 2 days 4. The children haven't had a long vacation since last year 5. They haven 't visited their parents for 3 months 6. It has been 2 years since we broke up. Giúp mình vs ạ

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