阅读下面短文,在空白处填入一个适当的词,或填入括号中所给单词的正确形式。Do you know Zhai Zhigang? He was born {#blank#}1{#/blank#} October 1966 in Heilongjiang Province. According to his clothes, you can guess that he is {#blank#}2{#/blank#} astronaut.
As early as 2008, China sent {#blank#}3{#/blank#}(he) into space. He was the {#blank#}4{#/blank#}(three) astronaut into the space in China. At that time, Zhai wore an about $30 million Chinese-made suit weighing 120kg. Liu Boming wore a Russian-made one {#blank#}5{#/blank#} acted as a backup (后援). On this flight, Chinese people {#blank#}6{#/blank#}(leave) their footprints in space for the first time. The only two {#blank#}7{#/blank#}(country) that have sent people into space are Russia and the United States.
"I'm feeling {#blank#}8{#/blank#} (real) well. I want to say hello to the Chinese people and the people of the world," Zhai said after {#blank#}9{#/blank#}(climb) out of the spaceship at around 9:56 am, 16th April 2022(Beijing time), Tens of millions of the Chinese were so {#blank#}10{#/blank#}(excite) and waiting before TV screens to watch the moment when Shenzhou-12 returned to the earth. How proud we Chinese people are!