There is a sunrise or a sunset every 45 minutes.用 every 45 minutes提问＿＿ is there a sunrise or a sunset?

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There is a sunrise or a sunset every 45 minutes.用 every 45 minutes提问＿＿ is there a sunrise or a sunset?
There is a sunrise or a sunset every 45 minutes.用 every 45 minutes提问
＿＿ is there a sunrise or a sunset?

There is a sunrise or a sunset every 45 minutes.用 every 45 minutes提问＿＿ is there a sunrise or a sunset?
How＿ often＿ is there a sunrise or a sunset

How often is the sunrise or the sunset?

How often is there a sunrise or a sunset?

There is a sunrise or a sunset every 45 minutes.用 every 45 minutes提问＿ ＿ is there a sunrise or a sunset?

There is a sunrise or a sunset every 45 minutes.用 every 45 minutes提问＿＿ is there a sunrise or a sunset?