3. Use the Passive Voice. 1) Radium and polonium / to discover / Maria Curie. 2) Robert Goddard / to launch / the first rocket in 1926. 3) "The Origin of Species" / to write / Charles Darwin. 4) The telephone / to use / to speak to other people. 5) The first computer / to make / in the USA. 6) The first accurate clock / to design / in 1657.​

The Great Fire of London happened in Central London in 1666. The fire lasted for just under five days, from 2 September until 6 September.

It is believed to have destroyed the homes of 70,000 of the 80,000 people that lived in the city. It is not known how many people died in the fire. Only a few deaths are certain, but for many of the victims there were no records. Also, the fire may have cremated many, leaving no recognisable remains. It threatened the aristocratic district of Westminster (the modern West End), Charles II's Palace of Whitehall, and most of the suburban slums. However, it did not reach these districts.

The fire started at the bakery of Thomas Farriner (or Farynor) in Pudding Lane. It began just after midnight on Sunday 2 September and grew very fast. Firefighters of the time usually made firebreaks by destroying buildings around the fire so it could not spread. This did not happen soon enough. Lord Mayor Sir Thomas Bloodworth was not certain what to do. By the time he ordered such measures, it was too late. The Tower of London guard used gunpowder to make good firebreaks that stopped the fire from spreading to the east.

Anna has got many books so she can read them. 

may I borrow your rubber, please? Yes, of course you may 

You can find any kind of information on the Internet. 

Complete the sentences with the correct modal verb (must, mustn’t, don’t have to)

We mustn't arrive late, and we must go to every class. 

We don't have to have lunch at school, so I sometimes go home.

Complete the sentences with the correct modal verb (must, needn’t)

Shall I turn on the light? — No, you needn't. It is still light in the room.

You needn't make your bed. I'll do it for you.

You needn't buy mineral water, we have plenty.

The meeting is very important. We needn't be late.

Complete the sentences with the correct modal verb (must, can, need)

Sonia must practise so much if she wants to take part in the marathon.

If you want to improve your English, you must work very hard.

You need not come to help them tomorrow: the work is done.