阅读下面短文,在空格处填入一个适当的词或使用括号中词语的正确形式填空.
Many people dream of traveling into space,but it costs too much （1）______ （make） that dream come true. （2）______ （luck）,here is a chance for people who love exploring space.An unusual new reality TV show （真人秀） called Space Hero is coming.
Space Hero will be the world\’s （3）______ （one） reality show in space.It will send （4）______ lucky traveller into the space station and let him or her stay there （5）______ten days.The show is open to anyone that is （6）______ （old） than 18.Twelve men and twelve women will be picked.And then they will take part in hard space training for the final trip, （7）______fitness is very important for the would-be traveler.Challenges and （8）______ （activity） will help find the winner.People from all over the world will first watch the show and finally pick （9）______ （they） favourite person through the Internet.The creators of Space Hero hope the show (10)______ （encourage） interest in space travel.