Complete the sentences with the words given

46. Although/ living/ city/ have/ many advantages/ there/ disadvantages/ too.
47. Cost/ living/ very high/ city/ because/ not goods/ very expensive.
48. Environment/ polluted/ dust, smoke, garbage and dioxide gases/ factories/ and/ streets/ dirty and unclean.
49. As/ there/ a lot/ vehicles and people/ road/ city/ always busy/ noisy.
50. Therefore/ it/ hard/ lead/ healthy life/ city.