1.自1896年以来举办现代奥林匹克运动会。
   The modern Olympic Games ________ ________ ________ since 1896.
2.我们加入这个俱乐部已经四年了。   
   We ________ ________ ________ the club for four years.
3.他们曾在舞台上扮演过重要角色。 
   They ever ________ ________ ________ ________ ________.
4.英语夏令营能提高你的英语能力。   
   The English Summer Camp can ________ ________ ________ of your English.
5.有些家长把孩子送到夏令营是为了得到一次放松的机会。 
   Some parents sent their children to the summer camp to get ________ ________ ________ relax.