1.1
2) they're
3) she isn't
4) it's
5) I'm not
6) you aren't
1.3
2)My bed is very comfortable
3)Your cigarettes are in you bag
4)I am not (I'm not) very happy today
5)This restaurant is very expensive
6)The shops are not (aren't) open today
7)Mr. Kelly's daughter is six years old
8)The houses in this street are very old
9)The examination is not (isn't) difficult
10)Those flowers are very beautiful
1.4
3) I am hungry today
4)It isn't warm today
5)Rome isn't in Spain
6)I am afraid of dogs
7)My hands aren't cold
8)Canada is a very big country
9)The Amazon isn't in Africa
10)Diamonds aren't cheap
11)Motor-racing is a dangerous sport
12) Cats aren't big animals