Directions: In the below given passage, there are blanks each of which has been numbered. Five words are suggested, one of which fits the blank appropriately. Find out the appropriate word in each case.
20 years __(1)__ now, nearly 60% of the world's population will live in urban areas. The impact of urbanisation might not all be positive on India as urban expansion is happening at a much __(2)__ rate than infrastructure expansion. Sustainability issues need to be __(3)__ so that economic development is not at the __(4)__ of public health. Some urban services that ought to be in __(5)__ in a city like water, electricity, transport, etc., need special consideration.