The key answer of exercise 3

a)

1. high mountains
2. low hills; west
3. Spain; south
4. Poland; east
5. lovely forest; north
6. Japan / Osaka; huge city

b)

1. There are high mountains in the south of Argentina.
2. There are low hills in the west of Ireland.
3. There's a famous desert in the south of Spain.
4. There are beautiful lakes in the east of Poland.
5. There's a lovely forest in the north of Kefalonia.
6. There's a huge city in the west of Japan.