依次填入下面一段文字横线处的语句，衔接最恰当的一组是（ ）第十届全国中学生运动会会徽造型_________, ___________。___________；_________, ___________；__________,象征着青少年朋友在中运会上充满激情、满怀希望、实现梦想。①会徽还将“十”和“中”巧妙的融入其中②色彩上采用红、绿、蓝三种颜色③指出本届运动会的特征④体现了本届运动会“阳光运动”的主题⑤犹如一个在奔跑或舞动的阳光少年⑥仔细看又有一个变形的汉字“长”，点明运动会的地点

pulation of the countryis 3 million, _____ Kooris

I ______ to your birthday party last Sunday!— Unfortunately, you were on business. [ ]

Why are youso tired these days—Well, I have________ homework to do.

The old tower must be saved, the cost.