— There is little water left in the bottle, ______? — No, we need to buy some more before we run out of it.
A：is there
B：isn't there
C：is it
D：isn't it
春秋战国以前，“百姓”是对贵族的总称；春秋战国以后，“百姓”成为民众的通称。导致这一变化的主要原因是（ ）
______ open the box.
She has always had a high fame for her excellent short stories.
