Fill in the blanks from the given options. Single large buildings which can accommodate many different residents or families are known as _______. (apartments/bungalows) Water in our homes is purified by a device called _______. (water boiler/water purifier) 97% of the water on the Earth is _______. (sweet/salty) Walking on the railway tracks to cross _______ is highly dangerous. (bridges/platforms) There are entry and exit ______ on both sides of every compartment for the passengers to enter and exit the train. (windows/doors) _______ are the sleeping arrangements made in a sleeper coach of a train. (berths/tracks) ________ is the person responsible for all the official activities in a railway station. (station master/loco pilot) Babies spend most of their time with their ______. (brother/mother) Karnam Malleswari has won _____ gold medals in international events. (32/29) ________ is the only Indian woman to win six gold medals in world boxing championships. (Mary Kom/Mithali Raj)