This exercise isn't as hard as this one
1if we cut down fewer forests the air would be fresh.
2if I were a famous actor my photos would be in all gloss magazines.
1. I have always wanted to see Lake Titicaca.
2.Have you seen the mountains in New Zealand yet?
3.We have never seen dolphins.
4.Sam has already been to Spain.
5.Have they ever visited the British Museum?
6.My sister have not visited London yet
7.I have never travelled by plan.
8.It has always been my dream to travel to Japan.
<span>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___ __memory______computers could
perform__operations____ much faster.
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