在下列各句的空格内填上一个适当的完整的单词，该词的首字母已给出。Many boys wants to be s___________ when they grow up.
In Ningbo, the weather of this summer is much h ____ than that of last summer.
Why is cold running water h__________ to treat a small burn?
A friend o ____________ me a cigarette at the party yesterday, I refused it.
Many parents couldn’t afford to pay for their c___________ education in China.