In order to improve the air quality in Hong Kong , a wide range of means(measures) have been taken to reduce vehicle emissions; however, owing to the increasing pollution from neighboring Guangdong Province and ever-taller new buildings , air quality is getting worse , resulting in international attention and a poor image being presented overseas. It is also difficult to see the clear blue sky now ! To my worry, i think it is necessary to discuss the problem of air pollution in depth and i would like to suggest some ways to deal with it.
why i cannot use "means"?
My teacher also write a question mark on "To my worry", do you think that it is strange too and what word can i use to take the place of this clause?
Thank^^