1. Study - studied. Give - gave. Grow - grew. Become - became. Discover - discovered. Reach - reached. Be - was (were). Know - knew. Win - won. Declare - declared.

2. 1. + Da Vinci learnt a lot of sciences.

- Da Vinci didn't learn a lot of sciences.

? Did Da Vinci learn a lot of sciences?

2. + Washington fought in battles.

- Washington didn't fight in battles.

? Did Washington fight in battles?

3. + Columbus found the way to a New World.

- Columbus didn't find the way to a New World.

? Did Columbus find the way to a New World?

3. 1. What did Columbus reach in the 15th century?

2. When did Washington lead his army to the victory?