阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Humans may live on another planet one day! That 【小题1】 (seem) impossible years ago. But now the idea may come true. According to Stephen Hawking, a British 【小题2】 (science), humans only have about 1,000 years to live on the earth. It means that humans 【小题3】 (fly) to another planet in 1,000 years. In fact, we have found one red planet Mars (火星). Experts have found that there 【小题4】 (be) water on it. The idea of living there looks possible. Thanks to science, the steps to Mars are getting 【小题5】 (fast) than before. For example, in 2013, Dutch experts 【小题6】 (plan) the first plan to put humans on Mars. They offered people one-way tickets to go and build a new home on Mars. 【小题7】 it was dangerous, over 200,000 people still wanted to take part in it. 【小题8】 the evening of September 21, US experts showed another plan to get humans to Mars in six years. They are also doing many 【小题9】 (prepare) to help people get back to the earth. I’m looking forward to 【小题10】 (live) on Mars. Will you join us?