根据句意及各题括号中所给的汉语意思，从下面的方框中选择合适的单词或词组，用其适当形式填空。

1．The new football ________(体育场)can hold eighty thousand people．

2．I think the actors ________(表演)very well．

3．This book gives the ________(背景)of the Civil War．

4．The technical cooperation and cultural exchange between the two countries are daily ________(增长)．

5．Studying English has many ________(优势)．

6．I give my ________(保证)that I’ll pay you money tomorrow．

7．They ________(赢得)freedom with their blood．

8．Be more ________(明确)about what you want to do．

9．Luo Xuejuan is a world swimming ________(冠军)．

10．________(质量)matters more than quantity．

11．Stealing a car and then driving it drunkenly were ________(极至)foolish．

12．The boy ________(站起来)in the river．

13．We have won the ________(胜利)over the enemy．

14．There was a confrontation ________(戏剧性地)existing between the two leaders．

15．He ________(坚持说)that he had never been near the scene of the crime．

16．He was ________(宣布)finally out of danger．