1. The box was so heavy that my son couldn't carry it.
-->It was such a heavy box that my son couldn't carry it.
2. Columbus discovered America.
--> The explorer called Columbus discovered America
3. The team has seldom given a worse performance.
-> Seldom has a worse performance given by the team
4. If they were to escape , there would be an outcry.
-> Were they to escape , there would be an outcry.
5. The facts were not all made public until later.
-> Only later were the facts made public
6. Harry broke his leg , and also injured his shoulder.
-> Not only did Harry break his leg, but also injured his shoulder
7. He had never felt so depressed.
-> Never had he felt so depressed.
8. The dog is chasing the cat under the table.
-> Under the table is the dog chasing the cat.
9. A seal is lying on the beach.
-> On the beach lied a seal