()the evening of my birthday,we ofter have a party.a:at.b:in.c:for.d:on.
问题描述:
()the evening of my birthday,we ofter have a party.a:at.b:in.c:for.d:on.
答
d
()the evening of my birthday,we ofter have a party.a:at.b:in.c:for.d:on.
d