问题
选择题
—It is so dark tonight, Mum.
— Yes, this is just ________ we can enjoy brilliant stars in the sky.[ ]
A. when
B. where
C. how
D. because
答案
答案：A
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—It is so dark tonight, Mum.
— Yes, this is just ________ we can enjoy brilliant stars in the sky.[ ]
A. when
B. where
C. how
D. because
答案：A