Subject

    English Language

    Topic

    Preposition

    He has been studying _____ three hours."

    ক)
    for
    খ)
    since
    গ)
    from
    ঘ)
    during

    Explanation

    • "for" is used to denote a duration of time (e.g., "for three hours"). • "since" indicates a starting point in time (e.g., "since 9 a.m."). • "from" generally denotes the starting point of a range (e.g., "from Monday to Friday"). • "during" indicates within a particular period (e.g., "during the meeting"). Example: - He has been studying for three hours. (নির্দিস্ট সময় ধরে) - He has been studying since 9 a.m.. (একটা নির্দিস্ট সময় থেকে) - He has been studying from 9 a.m. to 12 p.m.. - He has been studying during the meeting.

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