Michael and his sister are / have a lot in common. I've been trying to keep in touch / get in touch with Angela all day.
I have known / met John in 1998.
I think you'll like David when you get to know / get on well with him
We had lost / kept in touch with each other but met again throug
united.
Ex 1
1. in year four seasons
2. My favorite season is summer
3. It's warm in the summer, you don't need to go to school, you can hang out with friends on the street until late
4. walk outside
5. Stay at home and play computer games
6. weather in Krasnodar in sprink sometimes cold sometimes warm
Ex 2
Present Simple
1. I sometimes plays computer Games
2. I usually walks with me friends
Present Continuous
1. We are cooking now
2. I go to park with my family at the weekend
Present Perfect
1. I have readed a book
2. They drunk water
Ex 3
Put the proper words into sentences:
analytical, digital, unreliable, sophisticated, solve, core, processor, computations, an integral circuit.
1)The Difference Engine could ... equations and led to another calculating machine, the ... Engine, which embodied the key parts of a computer system: an input device, a ..., a control unit, a storage place, and an output device.
2)Ada Lovelace helped to develop instructions for carrying out ... on Babbage machine.
3)J. Atanasoff devised the first... computer to work by electronic means.
4)First-generation computers were ..., the main form of memory being magnetic...
5)In the third generation software became more...
6)What was the name of the first ... computer to work electronically?
7)When electricity passed through the ..., it could be magnetized as either “ofF’ or “on”.
8)A ...is acomplete electronic circuit on asmall chip of silicon.