Is a good studient, she received a scholarship. is a good student, she didn't receive a scholarship. was raining, we went for a walk. was raining, we didn't go for a walk.5)this letter was didn't have enough postage.6)that letter was returned to the didn't have enough postage.7)susan didn't learn lived in mexico for a year.8)joe speaks spanish lived in mexico for a year.9)a newborn kangaroo can find its mother's eyes are not yet open.10)some people protest certain commercial fishing , considered to be highly intelligent mammals, are killed unnecessarily. ! нужно вставить even though или because

Tom, Thanks for offering to chair tomorrow’s meeting for me. Apart from Sally and Dave, the sales staff …needn't.. attend, but the Personnel people …mustn't.. miss it, as several matters concern them. You …needn't.. mention the new offices – we can deal with that later and you …needn't.. discuss the changes in the computer course timetables since they’re not urgent. Don’t forget that you …mustn't.. mention the visit by inspectors – we don’t want people panicking. You …mustn't.. forget to bring up the matter of the Smithson contract, and you also …mustn't.. leave out the new manager’s appointment. You …needn't.. go into details unless people have questions. But remember you …mustn't.. give anyone the idea that their job is at risk because of this. Make it clear that employess …needn't.. speak unless they want to. Last but not least, you …mustn't.. mention the staff-party Mr. Jones wants to announce that himself. By the way, you …needn't.. take notes, as my secretary will be there to do that. Thanks, Laura. 

1. The first digital computer could__solve__a lot of mathe­matical problems at a fast ___sped___. 2. Vannevar Bush built the first __electronic___computer in 1930. 3. Babbage's analytical engine was designed to ___process___ data. 4. J.von Neumann invented a machine that was able to__process___ not only data but also __texts___. 5. Neumann__came up with___ the idea of storing data in a __memory___ . 6. Computers use two conditions for__numeric___symbols. 7. The invention of___interface___ _devices__made computers possible to control and __generate___electronic signals. 8. Due to__cash___ __memorycomputers could perform__operations much faster.