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  1. Member
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      • Native Language:
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    range over or vary over?

    1. Our biological clocks govern almost every aspect of our lives. Our sensitivity to stimuli _______ over the course of the day, and our ability to perform certain functions is subject to fluctuations. Consequently, there is a peak time for tasks such as making decisions: around the middle of the day.

    A. modifies
    B. ranges
    C. varies
    D. waves

    I chose B but the answer is C. Do you think "range over" sounds better?

  2. VIP Member
    Interested in Language
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      • American English
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    Re: range over or vary over?

    No. It varies.

  3. emsr2d2's Avatar
    English Teacher
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    Re: range over or vary over?

    It definitely varies. Remember that this is not a phrasal verb you're looking for. The verb is simply "to vary" followed by a time period "over the course of a day". It's not "to range over".

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