Recently,we have had a discussion about the advantages and disadvantages of the construction of an underground。
On the one hand, it is very good to build an underground。
   Firstly, this is an important way to help the development of the area both in tranportation and in economy 。Secondly, it is of great help to reduce traffic jams in the area。
   Also,it is more convenient for local people to to other places。
On the other hand, there are also much trouble to build the underground。
   Above all, much farmland is occupied (used ) for it。 Next , a great deal of money is need to build it。 What's worse, more pollution is also brought about with the building of the underground。
  
In my opinion, there are more advantages to build an underground in the long run,so I agree to build one for futher development of our area。
  
祝你开心如意！O(∩_∩)O~~。