[ Subordinating Conjunction ]
______ the sun sets, we will light the campfire.
A. When
B. Before
C. Because
D. While
Select your answer:

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Đâu là cấu trúc của thì Tương Lai Đơn ở thể câu hỏi yes/no question?
A. S + will + V
B. S + won’t + V
C. Will + S + V…?
D. Wh_ + will + S + V…?