2. Has practised
3. Will be
4. Plant
5. Was
6. Was
7. Spoken
8. Enviromentalists
Part 4
3. Have -> had
4. Haven't they -> don't they
Part 5.
1. Many new schools have been built in BinhDinh provine
2. The computer has been used for three month
3. The hotel which is been my neighborhood is very popular with foreiners
4. The fishermen said that we were keen on setting our to sea again
Part 6
1. Euruption
2. Personal
3. Pollution
4. Terrible
Part 7
1. T 2. T 3. F 4. T