Our parcel has arrived.
Most people I know wouldn't use the word "arrived," though. I'm only mentioning that because I find it interesting when perfectly good words become archaic because people get lazy. Or, actually, it's probably because schools fast-track their students, arbitrarily trimming off a lot of meat along with the fat.
I don't use proper grammar in casual conversation anymore. I got tired of being asked if I'm a teacher, or what college I went to...and it's always "What college did you go to?" instead of which did you attend. These days, you aren't relatable when you use proper grammar. Not where I live, at least. Where I live, you get a smirk, a chuckle, and an expression that says "Who the hell is this guy?"
I rarely use proper grammar on here. "Loose grammar" has become a habit.