Resposta:
9) I have written the book
a)He has worked here for three months
b)They have gone to Australia many times
c)You have been in Paris
d) My family have visited me recently
10)a)It has stopped raining yet
Negativa:It has not stopped raining yet
Interrogativa:has It stopped raining yet?
b)I have worked at English school since 2007
Negativa:)I have not worked at English school since 2007
Interrogativa:have you worked at English school since 2007?
11) a) I meet the girl which sister dates you
b)The girl whose bought the house is very beautiful
c) I don't know which car is yours
d) That is the boy who parents got divorced last year
12) (a)We use Relative Pronoun who ( b )when we refer to things, ideas
,animals
(b)We use Relative Pronoun which ( c )as the possessive form of who
(c)We use the Relative Pronouuns whose ( a ) when we refer to people
