Question

You………………………… not use the office phone for private calls, (must, have to)​

Answer 1

Answer:

You……must……… not use the office phone for private calls

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Answer 2

Must

Here must and have to actually indicate same kind of sense but we cannot use have to as it is not appropriate over there. So we should use must.

Modal auxiliary -

Must is modal auxiliary whereas have to is simple auxiliary but both indicate same meaning that is obligation or compulsion.

Sometime according to the sentence we can replace 'must' with 'have to.'

The list of modal auxiliaries is as follows-

• Can which shows ability in the present.
• Could that shows ability in the past
• Will shows certainity
• Would shows habitual action in the past
• Must shows obligation,
• Should shows advice or suggestions,
• might shows probability or possibility
• may shows permission,
• need to shows necessity ,
• ought to shows social obligations.

To know more about modal auxiliaries and auxiliaries visit the following links-

https://brainly.in/question/37568223

https://brainly.in/question/18063985

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