--instructions--

Listen to the audio and complete the sentence below.

--fillInTheBlank--

--sentence--

What I can't BLANK is how they got past our BLANK.

--blanks--

figure out

--feedback--

This phrasal verb means to understand or solve a problem. Use two words.

firewall

--feedback--

This is a security system that blocks unauthorized access to a network.

--explanation--

Figure out is a phrasal verb meaning to solve or understand something that is difficult. For example:

We need to figure out why the website isn't loading. - They need to understand the reason why the website is not working.

A firewall is a security feature that protects computer networks from hackers. It works like a digital barrier, allowing safe data in while blocking dangerous traffic. For example:

Make sure the firewall is active before you connect to the internet. - Ensure the security system is on before using the internet.

--scene--

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    "audio": {
      "filename": "B1_14-3.mp3",
      "startTime": 1,
      "startTimestamp": 15.44,
      "finishTimestamp": 18.4
    }
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  "commands": [
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        "text": "What I can't figure out is how they got past our firewall.",
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