Answer the questions: 1)are you going to take part in the russian-english students exchange?2)Сan I change my Russian money for English pounds,plese.3)Would you like to chande your suit before you go to the theatre?4)Would you like to go to the cinema for a change?5)Did your father change his job last year?6)Could you give me change for one pound ,please?

Help me ! Please)) 
Нужно вставить в пропуски... 

The Aborigines 1.____ the native people of Australia) Two-thirds of them 2.____ when Europeans 3.____ Australia) It 4. ______ so because Aborigines 5. _____ in contact with small pox before so they 6. _____ no immunity. Besides they 7.____ badly by the Europeans, who 8._____ 9_____ them and 10. ______ their land from them. 

1. a) are 
    b) have been 
    c) was
    d) will be

2. a) die
    b) died 
    c)were dying
    d) have died 

3. a) colonized
    b) colonize
    c) have colonized 
    d) had colonized

4. a) happen
    b) happines
    c) happened 
    d) has happened 

5)  a) were not 
     b) had not been 
     c) have not been
     d) has not been

6. a) have
    b) has
    c) had
     d) have had 

7. a) were treated 
    b) are treated 
    c) have been treated
     d) will be treated

8. a) want 
    b) wants
   c) wanted
    d) will want 

9. a) dominate
   b) dominates
   c) to dominate
     d) dominated

10. a) take
    b) takes 
    c) will take 
    d) would take