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（ ）中国是礼仪之邦，慷慨好客是我们的民族性格。______,______，______,______，______,______。①一般来说，发自内心的尊重关爱应该是主人待客的基本态度。②待客之道，首在分清宾主。③当然，居客位的一方也需讲究“客道”。④好客自然讲究待客之道。⑤主即待客迎送的一方，宾即拜谒、暂居的一方。⑥主人为客人尽量想得周到，客人也尽量不给主人添麻烦。

I didn’t mean to keep you waiting here for a long time. There are several traffic jams on the way. Can you ____ me

Why does the lake smellterrible—Because large quantities of water ______.

I always take something to read when I go to the doctor’s ___________ I have to wait.

Niagara Falls is a great touristdrawing millions of visitors from all parts of the world every year