About of question with preposition at the end

[Bachram]

English Idioms and Expressions, Advanced Level

ESL/EFL Test #7 "English Grammar Prepositions", question 3

I'm off on Monday.

(a) having a holiday
(b) having an extra day
(c) having a long day
(d) having a short day

English Idioms and Expressions, Advanced Level

ESL/EFL Test #7 "English Grammar Prepositions", answer 3

I'm having a holiday on Monday.

Correct answer: (a) having a holiday
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I'd like to know everything about of question with preposition at the end.

Bachram

[Yankee]

What exactly are you unsure about?
What sorts of questions are you referring to?
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"Nearly all men can stand adversity, but if you want to test a man's character, give him power." ~ Abraham Lincoln