
Source: nrdc.org
The (big) problem on earth right now is climate change. Recently, we had the (bad) air pollution in many big cities. If we remain silent, we will see more floods, extreme heat, and rising sea levels in the future. The (difficult) task to handle this problem is how to make the government, private sectors, and society work together. Thus, we should start with ourselves even by doing the (small) action.
The correct forms for each word in the brackets () are .…