Vocabulary Complete the sentences with the correct forms of the words at the end. Add the correct suffix(接尾辞): -able, -al, -ic, -ive, -ion, -ment, -ly, etc. 1. The of new medicines enables us to live longer. develop) 2. We need communication to save endangered animals. (globe) 3. The water in this river is (drink) balance(バランス). 4. Introducing foreign animals changes the (ecology) 5. The chemical industry caused damage. (environment) on trade in order to protect 6. The government put a new the country's economy. (restrict) 7. Hot weather increases electricity (consume)