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  1. Member
    English Teacher
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      • Native Language:
      • Chinese
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      • Taiwan
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      • Taiwan

    • Join Date: Apr 2010
    • Posts: 267
    #1

    incubation period

    Which of the options is correct in the following sentence, at, over, after, or before ?
    My answer is (D) before. Am I right?

    The debate over whether it’s responsible for health care workers who treated Ebola patients to go grocery shopping or bowling or get on a cruise ship ____________ the end of the disease’s 21-day incubation period raises a larger question: What is everyone’s duty to prevent transmission of infectious diseases?
    (A) at (B) over (C) after (D) before

  2. Piscean's Avatar
    VIP Member
    Retired English Teacher
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      • Native Language:
      • British English
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      • Europe
      • Current Location:
      • Czech Republic

    • Join Date: Jul 2015
    • Posts: 13,478
    #2

    Re: incubation period

    You are right.

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