—Have you got any particular plans for the coming holiday?

—Yes.________，I'm going to visit some homes for the old in the city.

A．If ever

B．If busy

C．If anything

D．If possible

焦炉日常维修方法主要有湿法修补、半干法修补、火焰焊补、陶瓷熔焊法等方法。