--instructions--

Listen to the audio and complete the sentence below.

--fillInTheBlank--

--sentence--

Yes, all sensitive data BLANK be encrypted, and you BLANK ensure that the encryption keys are stored securely.

--blanks--

must

--feedback--

This modal verb expresses a strong necessity or obligation.

have to

--feedback--

These two words express obligation but in a slightly less strong manner than must.

--explanation--

Both must and have to express obligation or necessity, but there is a slight difference in their usage.

Must is used for strong internal obligation or official rules. It often sounds more formal or authoritative. For example:

All sensitive data must be encrypted. - A strict rule or requirement.

Have to is used for external obligation, often based on rules or circumstances rather than personal authority. For example:

You have to ensure that the encryption keys are stored securely. - A responsibility due to security policies.

--scene--

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    "audio": {
      "filename": "B1_14-1.mp3",
      "startTime": 1,
      "startTimestamp": 42.62,
      "finishTimestamp": 48.14
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  "commands": [
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      "character": "Jessica",
      "startTime": 1,
      "finishTime": 6.52,
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        "text": "Yes, all sensitive data must be encrypted, and you have to ensure that the encryption keys are stored securely.",
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