What is the grammatical reason for it being "an headquarters" instead of "a headquarters"?
829558
It's the same as an Hotel
1005770
hi..\n\nmight this link v'll help u\n\nhttp://grammar.ccc.commnet.edu/grammar/one.htm
1163890
No, that would show possessive use.  The s after the name is just fine, and actually grammatically correct.
231907
A) Antecedent (also called referent)
647749
The first one is correct.\n\nThe second would be correct if you changed the is to has.\n\nHTH
825552
yup, this is a singular, plural thing ... it differs from our usual plurals because we take both forms from the original greek. Another example is criterion, criteria (the word criteria is often wrongly used as a singular).
1040031
staff is\nnurses are\n\nworkforce is\nworkers are\n\nteam is\nteam members are\n\nhas to do with singular and plural\nyour question is mixed because one of the words is\nsingular and one is plural.\n\nsometimes usage gets weird.\nlike data and datum\ndata was originally plural...so it should be data is\nbut everyone says data are...\nit gets used as a plural...\nwords evolve and change.  this is one place that is possibly changing.
975550
Sweetheart, different sources use different abreviations. Can you type out specifically what they are? Then I might be able to help you.
401092
It is incorrect, grammatically.  It should read:\n\nJohn was sitting in the reception room by the operator.\nor\nJohn sat in the reception room by the operator.
706871
Are you sure the last letter is A? Coz 'Reproof' is a synonym of both those words, and will fit in with wht you've got except for the A.
900160
Because it is plural.  In spanish if you abbreviate something in plural you double the initial.
835105
Statement : I'm sure everyone at my workplace would get involved in the sewing competition I have organised!\n\nAnswer: Why not likely men.\n\nYou get it? The 'why' in front of the sentence is just a form of expression. To show that one disagrees.
1079109
You certainly can't omit "to have" and you shouldn't eliminate "to be" in (b). I don't quite agree that "I think it true" sounds grammatical anyway. If you like eliminating "to be", use "consider" instead of "think".
882364
It is a noun that redefines the subject, so to speak.\n\nHere are examples:\nHe was elected president.\nShe is an accountant.\n\nThe words "president" and "accountant" are the predicate nominatives.\n\nHope that helps!
225304
You can, of course, use the "one" - or even the imperial "we" - if you so choose; however, both sound stilted and condescending.  Even the grammatically correct answer to "Who is it?" - "It is I." - sounds stilted.  I suggest you read the very funny, somewhat new grammar book: EATS,SHOOTS,AND LEAVES; the answers to most current grammar/syntax questions can be found within.\n\nBest of luck,\n-MomBear
437030
It DOES look weird, because it should have a capital "L" then, right?  In stead, you used a capital "I", so I would be confused as well.  your question should actually say "lmao" or "LMAO"  not "IMAO"  Of course it wouldn't make any sense.
662941
None because:\n\n1.) There are robots all around making our lives easier.\n(took out comma)\n\n2.) There are robots all around, which make our lives easier.\n(added comma)\n*Note: This seems to be incorrect, so I will say that the answer MAY be #2, depending on how you were taught English.\n\n3.) There are robots all around; they make our lives easier.\n(changed comma into semicolon)