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.