—This is a really lively party.There’s a great atmosphere，isn’t there?

—________.The hosts know how to host a party.                      (2013·山东，32)

A．Don’t worry

B．Yes，indeed

C．No，there isn’t

D．It all depends

根据算式填空．

（1）258×4=1032

25.8×4=______

2.58×0.4=______

0.258×0.04=______

（2）68×25=1700

68×2.5=______

6.8×2.5=______

0.68×2.5=______．