23 pollutes
24 satisfying
25 consideration
26 endangered
27 scientifically
28 poisoning
33 This castle is said to have been built in the 19th century
34 Although the weather was bad, we arrived on time
35 If I were he, I would take the course
36 Nam finds playing sports interesting
VIII
1 We can save natural resources by using solar energy instead of coal, gas and oil
2 She will pay less money if she uses two energy-saving bulbs
23.pollution
24.satisfied
25.considered
26.dangerous
27.poisoned
II
33.This castle was said to build in the 19th century.
34.Although the weather was bad,we arrived on time.
35.If I though,he should take the course.
36.Nam finds playing games interesting.
