Many centuries ago the Tower of London was a fortress,a prison, an armory, a Royal Mint and an observatory. In medieval times the Tower had been used for storing Crown Jewels of the UK. The most famous victims of the Tower were:Ann Boleyn, Thomas Moore, Queen Elizabeth l. If the ravens ever leave the Tower, the British Monarchy will be doomed. The Tower was also used as a Zoo.
When were antibiotics ______ ? (discovered)
About forty million people in the world _______ with HIV which causes AI DS. (are infected)
Malaria ___ by male mosquitoes. (is not transmitted)
How is flu _ on from person to person? (passed)
The plague in Florence _ by Boccaccio in Decameron. (was described)
Many infectious diseases _ by mice and rats. (are spread)
AIDS on by sneezing, coughing or touching. (is not passed)
1 The cat has been chasing the mouse for two hours.
2 He has been copying the homework for three hours.
3 They have been taking care of a new garden since Monday.
4 They haven't been chatting in a forum since last week.
5 Ruslan hasn't been concentrating on the task for five hours.
1 How long has Dmitry been painting ?
2 How long has secretary been printing ?
3 How long have we been sharing a room ?
4 How long has the dog been running around?
5 How long has she knocking at the door?
Reeding
Doing
Walking
Singing
Playing
3. 1. B
2. B
3. B
4. Society
VI.
1. Has cleaned.
2. Have played.
3. Have took.
4. Has lost.
5. Have bought.
VII.
1. Her parents have never heard this song.
2. He has just turned the corner.
3. They already have done the work.
4. Has your cousin ever been to Moscow?