一道任务型题目It began with one red paper clip and ended with a hou

一道任务型题目
It began with one red paper clip and ended with a house.Kyle MacDonald,a 26-year-old Canadian,got a three-bedroomed house through 14 trades that started with a single red paper clip.
Encouraged by Kyle's successful experience,now more and more young people around the world are starting their own trading activities.They set up websites where people can trade things they do not usually use with other people.A website called Peerflix allows people to trade their used DVDs.These trades usually prefer face-to-face trading,which means they don't have to worry about who is going to pay foy the delivery.
1.The Chinese girl's
To make her dream come true,she must (____).
2.what to use for trading with others (______).
3.where to trade with others (______).
4.Why are the trades popular among young people?(______)