Fill in each blank with one suitable word

. In 1967 traffic in Sweden changed (1)............driving on the left-hand side of the road to the right-hand (2)............. Today the only (3)...........in the world that still drive on the left are Japan, Thailand, India, South Africa, parts of the British Commonwealth (4).............. as Australia and New Zealand and, of course, the United Kingdom itseft. Although the change in Sweden (5).............extremely expensive, it was thought there that the (6)..............outweighed the disadvantages. It has (7)............. suggested that Britain should follow Sweden,s (8)..............and also change to right-hand traffic