Thank you for me to your party

21．The moment we heard the news of the earthquake, we began to ________ the work to rescue those who were trapped in the building.

－ It seems that Mr Wu is standing there.－ It be him because he called me from Canada just now.

Is everyone here?—-Not yet…Look, there _________ the rest of our guests.

在文中①②横线上填入下列语句，衔接最恰当的一项是 （ ）金沙江大峡谷旁有一座远近闻名的纳西古城。 ① 。是纳西人最原始的聚居地。我们步行了一个多小时，古城出现在前面。 ② ，上面镌刻者“宝山石头城”五个大字。