In an examination, I came across this question, can someone please tell me what is the correct answer? An explanation will be great too, if possible!
Q: All of the furniture ___ moved to the room just now.
I know that (1) and (2) are automatically out, but I'm a bit confused about (3) and (4)...
I don't remember the exact question though, I think it is the one, I asked, but can a "s" be added behind furniture, e.g. furnitures, or is it grammatically wrong?