Use the correct word from the box to complete the sentences (destroy, destroyed, constructed,pollute, pollution, production,solve)

2) water is one of the most serious ecological problems
3) The fire a lot of trees in the forest
4) the of plastic bottles needs too much energy.
5) people must the problem of radioactive pollution as soon as possible
6) when we wildlife,we kill the animals
7) Don't throw the paper! You our nature

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Nancy ( has travelled) a lot in her life. She (has been) to many countries. Last year she (visited) Greece. 2. Hello, Pat! I'm glad to see you in Oxford again. How long have you (  been) here? When did you ( arrive)? 3. When did you first (  meet) your teacher? How old were you  then? How many years have you ( known) him already? 4. Have you ever (  tasted) any tropical fruit? Where did you ( eat) it? Did you (  like) it? 5. — Has Helen (written) the letter yet? — No, she hasn't. She ( began) doing it only ten minutes ago. 6. She says she has always ( wanted) to come to Australia. Now she is happy, she ( has been) here since Thursday. 7. Kate (has not typed) all the letters. She ( typed) three of them yesterday. But she (has not done) anything today 8. Uncle Tom has never (flown) in his life. But the other day he ( made up) his mind to take a flight to America.

Nancy ( has travelled) a lot in her life. She (has been) to many countries. Last year she (visited) Greece. 2. Hello, Pat! I'm glad to see you in Oxford again. How long have you (  been) here? When did you ( arrive)? 3. When did you first (  meet) your teacher? How old were you  then? How many years have you ( known) him already? 4. Have you ever (  tasted) any tropical fruit? Where did you ( eat) it? Did you (  like) it? 5. — Has Helen (written) the letter yet? — No, she hasn't. She ( began) doing it only ten minutes ago. 6. She says she has always ( wanted) to come to Australia. Now she is happy, she ( has been) here since Thursday. 7. Kate (has not typed) all the letters. She ( typed) three of them yesterday. But she (has not done) anything today 8. Uncle Tom has never (flown) in his life. But the other day he ( made up) his mind to take a flight to America.