What was the letter written about?Đoạn văn20/26What was the letter written about?A trip to CancunA school tripA business tripA trip to TulumGiải thíchĐáp án đúng là: A Dẫn chứng ở câu “We went to Cancun”. Dịch: Chúng tôi đã tới Cancun.