1. (2019七上·福田开学考) 阅读下面短文，选择正确答案。

    There is a river close to the Fishers' house. This Saturday, the Fisher family1a walk along the river. Mr Fisher says, "Oh, how2the river is! What about having a river clean-up day?"

    Mrs Fisher thinks it's a good3, but Nick doesn't think so. He just wants to go home and play computer games. He says, "Oh,4, there are a lot of rivers in the world. And so many people5rubbish into them. We can't make a difference to(对...产生影响) all the rivers in the world. Let's just go back, shall we? It's6today and I want to do what I want."

    "Son, you are7. We8make a difference to all the rivers in the world," Mr Fisher answers. "But we can make a difference to this river."

    "Nick, your dad is right. And I think if we make a difference to this9, one day it will make a difference to us.10don't we give it a try?"