The second one is grammatically correct but I'm not quite sure what you want to ask...
Are you room mates?
Are you in a relationship with your room mate?
Are you sleeping with your room mate?
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WBYeats
1
Reply
Sat 19 Apr, 2014 04:43 am
Thank you.
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-Why do we need presentation(s)?
Is S optional? PRESENTATION here means a student/students working on a subject/given topic and then reading aloud the handout/powerpoint file in class.