Rewrite the sentences using passive structures. 1) They have found depositsof coal in this area. 2) They discovered a new source of energy a month ago. 3) They have developed a new branch of industry. 4) They know this island as an island of wonders. 5) They haven't discussed this question yet. 6) They didn't publish this article in the local newspaper last week.

1. They have found deposits of coal in this area. Deposits of coal have been found in this area.

2. They discovered a new source of energy a month ago. A new source of energy was discovered a month ago.

3. They have developed a new branch of industry. A new brunch of industry has been developed.

4. They know this island as an island of wonders. This island is known as an island of wonders.

5. They haven't discussed this question yet. This question has not been discussed yet.

6. They didn't publish this article in the local newspaper last week. This article was not published in the local newspaper last week.