Find the mistake in each line of the text. write the correction below.

dear

thank you for your letter. it was great to hear from you. 

i am sorry that you are very busy, you should rest and that is why  i think it would be nice to go to the football match. i am glad that you think so and i also shall be happy to see you.

yes, i am a football fan and i think it's one of the most exciting games. it is so interesting to watch football matches. 

honestly, i don't know how much the tickets are, but my friend said it costs 200 rub.

sorry, i have to go. my mum is calling me. i'm looking forward to seeing you too!

 

best wishes,

Four generations of computersthe first vacuum tubes computers are referred to as first generation, and the estimated period of their use was from 1950 to 1959. is an example of these computers which could perform thousands of calculations per second. thousands of vacuum tubes emitted a large amount of heat and burnt out frequently.milliseconds to microseconds, or millionths of a second. second generation computers were smaller, faster and more reliable than first generation computers.the computers that were designed for use of integrated technology were called third generation computers, and the approximate time of these machines was from 1960 to 1979. they can perform many data processing operations in nanoseconds, which are billionths of a second.fourth generation computers have now arrived, as well as integrated circuits that are being developed have been greatly reduced in size. this is due to the miniaturization, which means that the circuit is much smaller than before; as many as 100 tiny circuits are placed now on a single chip.