They had just set off on their hiking adventure. They realized they had forgotten to bring a map.

36/50

Had they not set off on their hiking adventure, they would have realized they had forgotten to bring a map.

Not until they realized they had forgotten to bring a map did they set off on their hiking adventure.

Only after they realized they had forgotten to bring a map did they set off on their hiking adventure.

Scarcely had they set off on their hiking adventure when they realized they had forgotten to bring a map.

Giải thích

Giải thích: Câu đảo ngữ: Scarcely/Hardly + had + S+ Ved/V3 + when + S + V + O: vừa mới … thì …

Chọn D

Tạm dịch:

Họ vừa mới bắt đầu cuộc phiêu lưu đi bộ đường dài thì nhận ra mình đã quên mang theo bản đồ.