Odpowiedź:
1 A similar process is used in some African countries.
2 I was given a watch for Christmas by my sister.
3 The rules must be obeyed by students.
4 Tom was asked to arrive punctually.
5 Penicillin was discovered by Alexander Fleming.
6 A new vaccine is being worked on by a team of American doctors.
7 Invitations have been sent to hundreds of people.
8 The murderer is being looked for by police dogs.
9 People, who are 100 years old, are being greeted by the Queen.
10 The play has been praised by critics.
11 Honey is made by bees.
12 The thieves have been arrested.
13 The news is being read by the radio announcer.
14 A speech was made by the Prime Minister.
15 Ou fence was being repaired by an unemployed labourer.
16 Houses as well as all the bridges were swept away by floods.
17 Toasts were being drunk by the guests.
18 The disco was closed at 6 o'clock in the morning.
19 New houses are being built by workmen.
20 All the roads in town have been covered by snow.
21 The renovation ought to be finished by the end of the week.
22 The doll was being undressed by a small girl.
23 The movie is to be worked on by a famous director.
24 These sheep must have been killed by wolves.
25 She had been seen behaving very strangely by John.
26 He has been bitten by a poisonous snake.
27 Her washing is done by her mother.
28 All the bird-food has been eaten by squirrels.
29 A school dance has been organized by the students.
30 She has been given the snack by her boss.
31 The canon was being operated by a young soldier.
32 His eyes are shadowed by a hat.
33 The frightened pupils were soothed by the teacher.
Wyjaśnienie:
W zdaniu 13 napisałam The news is ..., ponieważ ten wyraz jest w liczbie pojedynczej, pomimo użycia litery "s" na końcu.
