一个英语短对话求解释

问题描述:

一个英语短对话求解释
W:how is the swimming class going?i think you are learning well
M:SLOWLY BUT sureLY
how does the man do swimming
A HE IS Making steady progress B the class is too slow
我觉得是B,可答案选A.为什么,

译文:
W:游泳班进展的怎么样?我觉得你学得挺好.
M:稳扎稳打.
how is it going有进展的怎么样的意思