Pages won't open docx documents
I am giving up on Word and want to switch to another word processor.
I do light-duty stuff, almost all text and tables, very little in the way of page layouts aside from pasting in an occasional graphic or photo.
Being a long-time Apple fan, I bought Pages for Mac. I do not plan to use it in iOS, only on my laptops.
First thing I did was try to open a docx from within Pages. The .docx icons are all grayed out. The even older .doc icons aren't grayed, but Pages says it can't open them "for some reason."
I'm probably missing something very basic here.
Thanks for any help.
MacBook Pro (15-inch Late 2011), macOS Sierra (10.12.1)