根据英文释义填上一个适当的单词1.___________someone whose job is to design,build,etc.

根据英文释义填上一个适当的单词1.___________someone whose job is to design,build,etc.
2._____________a group of peopie who officially control a country.
3._____________someone who travels in the space.
4._____________the man that a woman is married to.