If a word or phrase in bold is in the correct form, leave blank. If it is incorrect, write the correct form on the line.

The mobile phone

People (1) (have been dreaming) of having a personal means of communication for a long time. In the late 1960s, the idea (2) (had seemed) so far in the future that it (3) (was included) in the science fiction series. Star Trek. Since the 1980s, however, mobiles (4) (became) a part of everyday life. Although they (5) (were) initially (seen) as a status symbol for successful business people. mobile use (6) (had spread) to include practically everyone in the developed world, old and young alike.

The impact on social life (7) (had been) enormous.We have got used to the idea of having constantly changing social plans, where a quick phone call is all it takes to rearrange things. Before this was possible, there were many occasions when friends who (8) (had arranged) to meet completely (9) (had missed) each other because of a slight misunderstanding. People would often have to make very careful arrangements to be sure of meeting up.

As mobiles (10) (have been becoming) more popular, so they (11) (have become) more powerful.The large, unreliable mobile phone of the I980s (12) (has evolved) into the small, stylish camera phone of today.