Walking or going

Hello,

There are two blanks which need to be filled in. For the first one: I was always terrified of someone____ in while I was on my knees scrubbing the floors and toilets. And the second one: It was my job to circulate through the room and replenish coffee and juice. But some people wanted me to do _____for them. I remember one man who kept ordering me to get his food and demanding things we did not serve.

For the first one,of course we can fill in blank with “walking”. Then how about "going"? Would it be also OK?

And the second one, probably we can use “everything” to make it. But how about "something"? Maybe "something else" is ok ?

It seems a little bit long,but NO TEXT,NO MEANING. SORRY TO TROUBLE.

Thank you.