英语 填上一个适当的词
1.YangLiWei flew around the Earth in the Shenzhou 5 in _________.
2.Dr.ZhangLing works in space ___________.
3.Dr.Zhang loves science.She is a ___________.
4.The sun is a star and the Earth is a _____________.
5.In fact,the sun is the biggest thing in our ________ _______.