"We are taking an eco-tour to the mountainous area of Ha Giang. " she said.

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She said that they are taking an eco-tour to the mountainous area of Ha Giang.

B She said that they were taking an eco-tour to the mountainous area of Ha Giang.

She said that they take an eco-tour to the mountainous area of Ha Giang.

She said that they had taken an eco-tour to the mountainous area of Ha Giang.

Giải thích

Hướng dẫn giải:

Đáp án đúng: B

Câu tường thuật: are → were

Dịch nghĩa: Cô ấy nói rằng họ đang tham gia một chuyến du lịch sinh thái.