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 scientist’s 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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