thedoctorrefusetodoso这里的so是什么意思.是不是相当于it

Question

the doctor refuse to do so
这里的so是什么意思.是不是相当于it

Answer 1

是的.
比如说：
I asked him to come here by taxi,but he refused TO .
I asked him to come here by taxi,but he refused TO DO IT .
I asked him to come here by taxi,but he refused TO DO SO .
I asked him to come here by taxi,but he refused TO DO THAT.