this river

• This river is dangerous to bathe in
  在这河里游泳危险。
• This river is ten meters in breadth
  这条河流十公尺宽。
• This river empties into the south sea
  这条河流入南海。
• This river is polluted . the water in the river most living
  这条河被污染了。河里的水毒死了大多数生物。
• This river divides at its mouth
  这条河在河口处分岔。
• There are crocodiles in this river
  这条河里有鳄鱼。
• The water in this river is clear , and we can see the fish swimming
  这河流的水很清澈，我们都能看见鱼儿在游。
• I asked her what this river was ,
  我问她那是什么河
• Navigation is difficult on this river because of the hidden rocks
  因为河上有暗礁，所以在这条河上航行很困难。
• Where does this river flow
  这条河回流到那里？