Question

cut down,   in place,   that way,   

recycle waste,     protect the   environment

Andy：Dad,I remember this place used to have many trees.    Where have the trees gone?

Dad：The trees 51  five years ago because they had     to make space for this factory.

Andy：But why did they have to do that? Didni they know t     hat trees can help 52  ?

Dad：Of course they did. But they thought money was more    important.

Andy:Without trees,soil can't be kept 53  So look at    the river. The water is not so clean as before.

Dad:That's true. And there is rubbish in the river.        People here haven’t realized the importance of 54     Andy:That's too bad. The environment here was     very good in the past. But local people didn't try     to keep it 55  

Dad: That's because they couldn’t find a balance (平衡)      between the environment and development.

51.   52.   53.   54.   55.  

Answer 1

  51. were cut down   52. protect the environment   53. in place   54. recycling waste   55. that way