1st BACHILLERATO ARTES
ADVANCED CONTRAST 1

STUDENT'S BOOK p22 answer key

Exercise 1:    
1. has existed
2. established
3. didn't have / created
4. have been / were
5. has used / imported

Exercise 2:
1. - How long have organised fire brigades existed?
    - Organised fire brigades have existed for over 2,000 years.
2. - Who established the first fire brigade in ancient Rome?
    - The emperor Augustus established the first fire brigade in ancient Rome.
3. - When did insurance companies form fire brigades in London?
    - Insurance companies formed fire brigades in London after the Great Fire in        1666.
4. - How long has France had organised fire brigades?
     - France has had organised fire brigades since 1810.

Exercise 3:
1. happened     2. has become   3. have crashed   4. has grown
5. began             6. have added    7. have planted    8. were

STUDENT'S BOOK p131 answer key

Exercise 2:
1. hasn't been    2. destroyed   3. Did...go   
4. has...called    5. heard          6. Have...found


WORKBOOK p15 answer key

Exercise 2:
1. They disappeared a month ago.
2. Yes, but it hasn't arrived yet.
3. No, I saw snow when I went skiing in Switzerland last year.
4. Yes, I haven't eaten since the morning.
5. You have just missed him. He left five minutes ago.