相对于股票投资而言，债券投资的特点是( )

A．投资风险较大

B．投资收益率比较高

C．无法事先预知投资收益水平

D．投资收益率的稳定性较强

根据句意及首字母提示完成单词。

1. They have been playing football s__________ ten o'clock.  

2. They are r__________ money for the Hope School.  

3. Last month my mother bought me a p__________ of shoes.  

4. The ice is too thin for you to s__________ on.  

5.Can you help us? Now we r__________  out of fuel.