题目内容：

While many students raise their hands in class to ask or answer questions, some people outside school raise their hands to get others' attention. Recently, the project "Raise Your Hands for Luca" has made people realize they can also do something amazing by raising their hands to help a brave boy named Luca Williams.

Luca comes from England. When he was three, he lost his legs because of a terrible illness. Luca's parents started the Raise Your Hands for Luca Project. They hoped to raise 1.5 million pounds to buy Luca prosthetic legs (假肢) and to pay for the care he needs.

Since then, many people have joined up by writing "For Luca" on their hands and putting the picture of it onto the website. The project has also caught many big stars' eyes such as the world famous football star Maradona. Mickey Mouse also joined the project to help Luca. By now, the project has raised about 225,000 pounds for the little boy.

1.Have many famous people joined in the project?

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2.What happened to Luca when he was three?

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3.Who started the Raise Your Hands for Luca Project?

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4.Do you like helping others in trouble? Why or why not?

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