Directions Q. (1 - 7): In the given passage, there are blanks, each of which has been numbered. Against each, five words are suggested, one of which fits the blank appropriately. 

We all have a ___ (1) ___ in the infrastructure surrounding us-the roads, buildings, power lines and telephone networks that we __ (2) _____ on daily. How well they are built and operated is __ (3) ____ to economic growth and is a key arbiter of an economy's competitiveness- and yet, virtually every economy faces an array of infrastructure challenges. Just a few examples illustrate some of the pressing issues. South Africa's power distribution network has an estimated maintenance backlog of $4 billion- equivalent to half of the country's total investment in electronic power generation and distribution in 2011. The U.S. Department of Transportation estimates that 15% of the country's roads are in an unacceptable condition and says that road congestion costs the US an estimated $100 billion per year. Just to keep _____ (4) _____ with anticipated global GDP growth, the world needs to spend $57 trillion, or on average $3.2 trillion a year, on infrastructure over the next 18 years. That is more than the entire worldwide stock of infrastructure on the ground today-and nearly 60% more than the world has invested over the past 18 years. Tackling maintenance backlogs, future-proofing infrastructure to cope with climate change and ___ (5) _____development goals such as access to clean water and all-weather roads to transport goods to markets would cost a great deal. The bill for all of that looks prohibitive at a time when many governments are highly indebted and capital is tight. A focus on both, the huge need for additional investment and potential difficulties in financing it, ___ (6) ____ the debate Pessimism rules, but it needn't be that way. There are ways of cutting the bill down to size and dealing with the challenge. The answer ___ (7) ____ in improving the way we plan, build and operate infrastructure- in other words, we need to boost its productivity.