Question

Выберите правильный вариант.
16. Towards the end of the 19th century the larger companies more and more on mass advertising to promote their new range of products. The market during this period by a small number of giant, conglomerate enterprises. a) relied, has been controlled b) relied, had been controlled c) were relying, has been controlled d) relied, were controlled 17. To cater for the fitness boom of the 80s and provide the up-to-date facilities people want, over 1,500 private health and fitness clubsduring the past 15 years. a) were built c) have been built b) had been built d) will be built 18. In 1936 the British Broadcasting Corporationto provide a public radio service. Since then the BBC by the establishment of independent and commercial radio and television, whichthe BBC's broadcasting monopoly. a) was established, was influenced, removed b) was established, has been influenced, removed c) was established, has been influenced, had removed d) was established, had been influenced, removed 19. The Neolithic Age was a period of history which in approximately 6000 B.C. anduntil 3000 B.C. a) began, lasted c) began, was lasting b) had begun, lasted d) had begun, had been lasting 20. A major problem in the construction of new buildings is that windowswhile air conditioning systems a) have been eliminated, have not been perfected b) were eliminated, were not perfected c) had been eliminated, had not been perfected d) eliminate, are not perfected