3 Read the text again and answer the questions.

1 Where does the word "per cent come from?

2 Who first used the numbers 0-9?

3 Why do we use percentages?

4 What percentage is the whole' equal to?

5 What is the whole in the example with cakes?

6 What do we multiply the fraction by to get the

final percentage?​

The cake ... by the children. 1 бал has already eaten have already eaten has already been eaten have already been eaten Pupils ... the results of the test. 1 бал have already told has already told has already been told have already been told The tickets for the concert ... out in a week. 1 бал have been sold has been sold have sold has sold A large supermarket ... in the town. 1 бал have recently built have recently been built has recently built has recently been built The exercises ... to all the students. 1 бал have been given has been given has given have given Виберіть правильний варіант цього речення у пасивному стані: Ben has already cut the trees. 1 бал The trees has already cut by Ben. The trees has already been cutted with Ben. The trees has already been cutted by Ben. The trees have already been cut by Ben. Виберіть правильний варіант цього речення у пасивному стані: My parents have just decorated our Christmas tree. 1 бал Our Christmas tree have just been decorated by my parents. Our Christmas tree has just been decorated by my parents. Our Christmas tree was just decorated by my parents. Доповніть речення правильною формою Present Perfect Passive: The prize 1 бал have already given to the winner. have already been given to the winner. has already been given to the winner. has already been gave to the winner. Виберіть правильний варіант запитання в Present Perfect Passive: 1 бал Has the dinner been cooked yet? Has the dinner cooked yet? Have the dinner been cooked yet? Has the dinner been cook yet?

1peter: you (have been telephoning) for ages. have you not nearly (finished)? jack: i (have not got) through yet. i (have been trying) to get our paris office but the line (has been ) engaged all morning. 2 ann (has failed) her driving test three times because she's so bad at reversing. but she (has been practising) reversing for the last week and i think she (has got) a bit better at it. 3 tom: i have often (wondered) why bill left the country so suddenly. peter: actually, i have just (found) out. 4 he (has been playing) the bagpipes since six o'clock this morning. he has only just (stopped). 5 why have you (not brought) me the letters for signature? have you (not typed) them yet? 6 tom (looking up absent-mindedly as mary comes in): have you been (sunbathing)? mary (crossly): don't be ridiculous! it (has been raining) all day! 7 a pair of robins (have been building) a nest in the porch since last week. i (have been watching them from my window since they began. 8 the police (have not found) the murderer yet, but the dead man's brother (has been) in the station all day. the police say that he (has been helping) them with their enquiries. 9 they (have pulled) down most of the houses in this street, but they (have not touched) the old shop at the corner yet. 10 tom is convinced that there is gold in these hills but we (have been searching) for six months and (have not seen) any sign of it. 11 i (have been waiting) for the prices of the houses to come down before buying a house, but i think i (have been waiting) too long and the prices are beginning to go up again. 12 peter (has been) a junior clerk for three years. lately he (has been looking) for a better post but so far he (has not found) anything.