根据句意及首字母提示补全单词。

1. You should s____ the table quickly for dinner.

2. Our teachers taught us to sing l____ songs before class.

3. At first, the mother almost went m____ because she lost her daughter.

4. The landlord is so c____ that almost everybody hates him.

5. To our surprise, they made p____ with each other in the end.

成人一般步行速度大约是每分钟60~70米，张家港港区到市区大约24千米，请你估计一下，一个成人从港区步行到市区（中途不休息）大约需要[ ]

A．40小时    

B．4小时     

C．0.4小时 

D．6小时