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Who invented the telephone in 1876? What did Alexander Graham bell invent in 1876?
2 Whose invention do we use nowadays? For what do we use Bell`s invention nowadays?
3 What is more complax version of the two-way radio?
4 Who began experimentin with the idea of usin  a number of radio masts to pickup signals from two-way radios in the 1940s?
5 Who moved far away from one mast and the next mast picked up the signal?  What did the next mast pick up when a caller moved too far away from one mast?
6 Where did the mobile phone quickly become synonymous with the "yuppie"? What is the "yuppie"? What did the new breed young urban professionals carry as status symbols?
7 What will become more and more advanced?
8 What do mobile phones with broadband internet access allow us?
9 Where do we live?

1. She is unhappy because he doesn't love her

She would be happy if he loved her

2. She was so happy yesterday because he told her he loved her

She wouldn't have been happy if he hadn't told her he loved her (She would have been unhappy if he hadn'n told her he loved her - т.к. два отрицания в английском не употребляют)

3. Glen stayed at home because the weather was bad

Glen wouldn't stayed at home if the weather was good

4. Molly doesn't trust him because she doesn't know him well

Molly would trust him if she didn't know his well

5. He didn't argue because he didn't know the subject well

He would have argued if he had known the subject well

6. I didn't drink the coffee because it wasn't tasty

I would have drunk the coffee if it had been tasty

7. The child learned the poem quickly because it was easy

The child wouldn't have learnt the poem quickly if it hadn't been easy (if it had been difficult)

8. I read a lot because I want to know a lot

I wouldn't read a lot if I didn't want to know a lot

9. I took the cat home because it looked unhappy

I wouldn't have taken the cat at home if hadn'n looked unhappy (if it had looked happy)

10. I don't watch TV because I don't have much time

I would watch TV if I haf much time