综合填空。根据短文内容，用所给单词或词组的适当形式填空。

dangerous,   become,   safe,   spend,   on,   send up,   cost

Yang Liwei was born in an ordinary family in Liaoning Province in 1965. He became a pilot of the Chinese
Air Force in 1987. He  1  1350 hours in the air. It took him five years  2  a spaceman. Yang Liwei was  3 
into space by China's ShenzhouⅤat 9 a.m.  4  October 15th, 2003. It moved around the earth fourteen times.
He came back  5  at 6:23 a.m. the next day, making China the third country to successfully send a person into
space.
1._____    2._____    3._____    4._____    5._____

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