1. Mary married John two years ago. She did not bring any money into the marriage and did not work during these two years, but she made her husband a millionaire. How did she do it?
When he got married, he was a billionaire. Because of his wife's spending habits, he became a millionaire. <-See the key here.
2. If Albert's peacock jumps over the fence onto Edward's property and lays an egg there, whose egg is it?
The peacock's. <-See the key here.