Question

my brother ‐-------------------in the shop at the moment. ( works/is working/ has worked/has been working)​

Answer 1

Answer:

"I was working" indicates that the working stopped at some point before the time of speech. "I've been working" indicates that the working has continued to the time of speech.

Answer 2

Was working is suitable

But there is no option of it

So we can use

Is working.