Will you get off my chair, please.
(It's a polite request, so no question mark.)
There is no correct answer you could say or type it anyway depending on which way you would like it best!
Made it exactly at their cut off time is not a correct grammar.
'Head off to meet with somebody' is correct grammar, although the preposition 'with' can be omitted.
The sentence 'Head off to the airport to ship out this stuff to Australia' is correct grammar.
Arrived 2 minutes before their cut off time is not a correct grammar.
Got in at 2 minutes before their cut off time is not a correct grammar.
Got in at 2 minutes before their cut off time is not a correct grammar.
The sentence "I arrived exactly at their cut off time" is not correct grammar because of the wrong diction used.
Got here in 2 minutes before their cut off time is not a correct grammar.
Arrived at two minutes before their cut off time is not a correct grammar.Is arrived at two minutes before their cut off time is not a correct grammar.
The sentence 'Head off to meet with somebody to ship out this stuff to Australia' is not correct grammar because of the misplaced modifier.
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