Заполните пропуски, выбрав правильную грамматическую форму. 1.the simplest digital device is any device which [a) can; b)could; c)must] count. 2.in ancient days man [a) learns; b) learned; c) has learned] to substitute beads for fingers to help him count. 3.the ancient chinese simplified the [a) counted; b) to count; c) counting] board into abacus. 4.the japanese improved the abacus making it [a)more efficient; b)much efficient; c)efficienter]. 5.the tremendous speeds of computers and the flexibility [a) building; b) built; c) to build] into them [a) because of; b) according to; c) due to] the logical control make modern computers more powerful than mechanical calculators. 6.the big problem in understanding digital computers is the logic which relates the logical elements into a unit [a)performed; b) performing; c) having performed] arithmetic and logical operations. 7.arithmetic operations [a) converted; b) are converted; c) was converted] into a sequence of simple logical operations. 8.any digital calculation is usually [a) breaking; b) broken; c) being broken] down into a sequence of elementary operations. 9.a computer is a device [a) to accept; b) has accepted; c) accepts] a set of instructions and [a) executes; b) executed; c) to execute] them in the appropriate sequence. lo. the flip-flop [a) is; b) was; c) has been] a storage cell with two inputs and two outputs.

существительное: деятельность, вышивка.глагол:   потерять, выполнять,  зависит,  исследовать.    синонимы: рядом, оригинальный,  северный,  родной, вниз.наречие:   к счастью,  ,  дико.предлог: в  вместе.

                                                                                                  23lenskaya str.

                                                                                                  moscow

                                                                                                  russia

                                                                                                  (119754)

                                                                                            novembeк 11th,2011

dear aleks,

thanks for your kind letter, i was so strongly glad it to receive. you ask to answer me your questions-is good.

  usually i spend in front of the tv about two hours per day, and sometimes even till five o'clock.  i watch tv so much, how many it is required to me, depending on need. more often i look informative programs, or what are interesting to me at present.  i don't love the program not bearing in myself of sense.what programs you look?   why you them look?   when you them look?

it is the end of my letter. 

answer it as soon as possible.

all the best,ann.