what、it、that、which、as的转换

例题：

1. ____ was reported that they won the game.
2. ____ was reported was that they won the game.
3. ____ they won the game was reported.
4. ____ was reported, they won the game.
5. They won the game, ____ was reported in the local newspaper.

答案：1. It  2. What  3. That  4. As  5. which