Out school has a sports meeting __October 15th?

问题描述:

Out school has a sports meeting __October 15th?
___应该填什么连词?A,at    B,on   C,in   D,for

Out school has a sports meeting _on_October 15th?选择B.
有具体日期几号的要用介词on,如:on June 1st,on New Year Day,等等.