1)
1. me
2. us
3. them
4. ours
5. his
6. our
7. their
2)
1. Peter's letter
2. My parents' house
3. My friend's room
4. Spanish capital
3)
1. Twenty fifth of May nineteen eighty three
2. Seventh of June twenty seventy six
3. Third of August five hundred fourth
4. Thirty fourth off December nineteen thirty nine
4)
1. long - longer - the longest
2. bad - worse - the worst
3. complicated - more complcated - the most complicated
4. wide - wider - the widest
5. useful - more useful - the most useful
6. happy - happier - the happiest
7. nice - nicer - the nicest
8. cheap - cheaper - the cheapest
5)
1. a
2. a, the
3. пропуски
4. a, of