In the following passages the numbered gaps indicate missing words. Against each number in the below each passage, four options are offered in columns lette...

In the following passages the numbered gaps indicate missing words. Against each number in the below each passage, four options are offered in columns lettered A to D. choose the word that is the most suitable to fill the numbered gap in the passages.
One of the indicators of -76- under development in this country is the backward state of the transport sector. This is typified by the poor state of the railway -77-. In advanced countries, commuter trains carry passengers from city and within suburbs. The -78- train goes a lot faster connecting major cities and even states; such trains have -79 only.
In the intra- city trains, it is only shelter and seats that are provided. There are no -80-. In some cases, and because of the long hours of service of inter-city or inter-state trains, -81- and -82- are available in addition to coaches.
Apart from the very fast electric trains, there are passenger trains that are -83- powered. There are others that use coal or steam as -84-. Some trains offer -85- services, transporting goods. Such trains stop at specific -86- to deliver goods or to refuel. Most trains have -87- to push or pull them to prevent them from turning around.
It is interesting to watch a modern-88- spring up and get completed in a matter of months. A few months ago, a building company brought some -89- to the virgin forest next to our school. The trees were -99-, the ground was cleared and -91-, and the workers brought out various -92- with which they measured a marked the -93-. Then the -94- was dug and the -95- were brought from somewhere else -96- was made from a mixture of sand cement and water, and the walls grew before our very eyes. Before the end of the second month, we realized it was not going to be a -97- but a storeyed building. The -98- was cast in only one day by the workers who -99- for the whole day. Thereafter things moved even faster. By the end of the third month, the whole -100- was in place.