dangerous.
3. Transform the word in capitals so that it can be used to form a word that fits suitably in the blank space.
1. ENVIRONMENT
Air pollution is one of the most serious . . . . . . . . . . . . . . . problems.
2. PROTECT
. . . . . . . . . . . . . . . . clothing is very important for scientists research.
3. EXPLORE
If I were you, I would continue the . . . . . . . . . . . . . . .
4. WONDER
We live in a . . . . . . . . . . . . . . . world.
5. NATIONAL
Disappearing of the forests is an . . . . . . . . . . . . . disaster
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