閱讀下面短文，在空格處填入一個(gè)適當(dāng)?shù)脑~或使用括號(hào)中詞語(yǔ)的正確形式填空。
    Many people dream of traveling into space，but it costs too much （1）

to make

to make

（make） that dream come true. （2）

Luckily

Luckily

（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）

first

first

（one） reality show in space.It will send （4）

a

a

lucky traveller into the space station and let him or her stay there （5）

for

for

ten days.The show is open to anyone that is （6）

older

older

（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）

because

because

fitness is very important for the would-be traveler.Challenges and （8）

activities

activities

（activity） will help find the winner.People from all over the world will first watch the show and finally pick （9）

their

their

（they） favourite person through the Internet.The creators of Space Hero hope the show （10）

will encourage

will encourage

（encourage） interest in space travel.