Hello YOUNUS,
As you can imagine, most of questions will concern what you have already done in your last projects/Experiences, so just be ready to give more details than you did in your resume and be ready to go in detail as deep as requested.
if not, the most question will be about process (Posting, Closing, VAT declarations, specific requirement for countries...)
or Technical (what transaction to open/close periods, to create GL account....)
or about tables (where can you find cost center text, where can you find PO headr data...)
depending on your experience on course and your field (functional or Technical or both)
Tamim