A singular noun. Yes, the origin of the word is the Latin plural of datum, but that’s not the point. Languages are dynamic and changing; if you don’t go with the flow, it can sound hypercorrect.
If you want to write English in an efficient manner, in a smart way and in a natural fashion, then don’t forget your adverbs. Do it efficiently, smartly and naturally.
English always writes its acronyms in capitals, with just a few exceptions that have escaped into the wild as normal words (such as radar, laser, snafu and scuba).
Would you want to be operated on by a surgeon whose skills are adequate? Or would you rather have one who’s good?
American spelling uses -ize; British spelling uses either -ize or -ise and may vary from one publication to the next. But be consistent!
It’s not a word. (Well, just about, deep in the dark depths of the dictionary. But that doesn’t make it correct.)
English style guides do differ a little about exactly how to format sums of money. But none of them do it the Dutch way.
Citizen is a perfectly good word when the context is about nationality. Overuse elsewhere can sound as if you’re talking about the French Revolution or writing a dystopian novel.
The word “and” creates a plural in English – in this example, you’re talking about more than one century, after all.
Coronatijd, coronamaatregelen, coronacrisis, coronawerk… Dutch has adopted “corona” as a new prefix, but English hasn’t. Well, not yet. Not really.