Упражнение 22. Найдите предложения с эквивалентами модальных глаголов to have to, to be to,
A. 1. Television has a great number of uses nowadays. 2. Morse discovered that telegraph messages did not have to be written, theycould be sent as a sound. 3. That part of this country has become a highly industrial one. 4. Why couldn't you do it yesterday? — Because I had to go home earlier than usual. 5. This important problem had been solved by the end of 1980. 6. In the past messages to and from Europe had to be sent by ship. 7. Some materials with useful qualities will have to be produced in space. 8. A historian has to study a lot of various facts to be able to reconstruct the far past.
B. 1. Such metals as iron, cobalt, nickel and some alloys are much more magnetic than any other substances. 2. In the next few years Russian engineers are to complete the work on supercomputers. 3. The main aim of this article is to explain methods and means of space industrialization. 4. We are living in an electronic world. 5. A number of TV stations are to be linked up into a network. 6. Experiments for industrial production of materials in space are being carried out in many countries. 7. Weightlessness is created on Earth, but only for a few seconds. 8. The quality of these metal parts is to be very high. 9. It was found that the acceleration rate on board such vehicles was to be reduced to a minimum.

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