1 . To discover is ________about something that already exists, but to invent is ___something new.
- A. to know, to find
- B. te create, to learn
- C. to learn, to creat
- D. to find. to know
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ঘ ইউনিট ২০১৪-২০১৫ || ঢাকা বিশ্ববিদ্যালয় || 2014
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