单词拼写（共5小题；每小题1分，满分5分）
The Song Dynasty c______________ three great inventions to world civilization, which have improved people’s life a lot.
A kind of friendly ____________ (气氛) can be felt throughout the conversation.
You have been ______________ (推荐) as a typist in our company.
He lit a c_________________, got up and went off.
Doing sports r___________ will help you keep healthy.