Rewrite the following in the Passive. My uncle painted this picture.

Rewrite the following in the Passive. My uncle painted this picture. Someone has offerd him a lot of money for it. He will deliver the painting tomorrow. When they give him the money he will tell them the truth. He painted it one night while he was sleepwalking! Our school is organising a contest. The teachers will choose the best project about the enviroment. The students must include pictures and drawing in their project. The students will also have to do all the writing themselves. The school will give the winner a set of encyclopedias.