1. Pointed sticks were used to dig holes in the ground where they planted seeds.
2. We have known the hidden treasures to still be our greatest mystery.
3. Baseball is referred to as the national pastime of the United States.
4. She often gets dressed in the way an actress does
 

1. They planted seeds by digging holes in the ground with pointed sticks.
 * Pointed sticks were used to dig holes in the ground for planting seeds.
2. The hidden treasures are still our greatest mystery.
 * We have not yet solved the mystery of the hidden treasures.
3. They call baseball the national pastime of the United States.
 * Baseball is called the national pastime of the United States.
4. She often gets dressed in way of an actress (use adverbial clause of manner)
 * She often gets dressed as if she were an actress.
5. She smiled and shook her head (use present participle phrase)
 * Smiling, she shook her head.