—Do you know if he ________ to my party tomorrow evening?

—I think he will come if he _________ free. [ ]

A. will come, is

B. comes, is

C. comes, will be

气温骤降，汽车不能启动可能和柴油的（）有关系。

A、冷滤点

B、闭口闪点

C、凝点

D、酸度