In all of Singapore/In Singapore. What's the difference between: "This is the height point in all of Singapore." and "This is the height point in Singapore."

Stay/Go without your phone for five minutes? My friend is addicted to his phone. So I said: "Give me the phone. I wanna see if you can STAY WITHOUT IT for five minutes.' Was my sentence correct? Do we say 'you can't stay without something?' I've also heard 'go without.' How would a native speaker say it?

At the end of the day it all comes down to I was arguing with someone complain about a videogame. I personally find nothing wrong with the game and think that he is just bad at it. At one point I said: "At the end of the day it all comes down to the fact that you are bad at the game." Is 'at the end of the day it all comes down to....' a natural and correct sentence?

Get MARKS/SCORE in exams? When talking to a student about exam marks do we say: 1) You won't GET ANY MARKS/SCORE for this answer??!! (when the answer is proorly written) 2) Your teacher will CUT YOUR MARKS/PENELIZE YOU for this?!? (when the student does something that's going to cost him some score) I know these are horrible sentences please let me know how to say them correctly.

DO/COMPETE/FINISH/ANSWER/START the questions? Do we say: "Do/Compete/Finish/Answer/Start the questions." Are all of them correct when telling a student to answer questions?

PUT/KEEP the couch over there? Do we say "PUT the bed/couch over there" or "KEEP the bed/couch over there?" I've also heard 'place.' Which one's most natural?

Going 'to Church' vs 'to THE Church?' Do we say I'm going 'to Church' or 'to the Church?' And is it the same for Mosque/Madir?

Squeeze a few minutes OUT/IN of your routine for reading? Is it natural to say: - Squeeze a few minutes out of your routine for reading. Or - Squeeze a few minutes in your routine for reading. Are there any other more natural ways of saying this?