How long does the light reach us from Alpha centauri ?回答
how long does it ()from ()to()?回答
How long does ti take for the sunlight to reach the earth?
how long does the spring festival last?该怎样回答?
How long does it take us to go to your hometown from here?it
how long does it take for light to travel across the diamete
How long does it takes from ** to **?
how long does summer last 怎么回答
How long does it take?如何回答
How long does it take him to get to the River stop from the
how long does it _____you to get from here to the pork?求了
How long does it take you to go to the bank?(回答问题,每空一词)
How long does the camp last?