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Modal Verbs of prohibition, obligation and no ob ...
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You ____________ leave your desk unattended without locking your computer.
Answer: mustn't
Oops!
Okay!
We ____________ stay late after work if the project is already complete.
Answers: don’t have to / don’t need to
Oops!
Okay!
Everyone ____________ wear their uniform on formal meeting days.
Answer: has to
Oops!
Okay!
You ____________ bring your own lunch if you prefer to eat out; it’s your choice.
don’t have to / don’t need to
Oops!
Okay!
He ____________ submit the report today—it’s already overdue!
Answer: has to
Oops!
Okay!
Visitors ____________ sign in at reception before entering the premises.
Answer: have to
Oops!
Okay!
They ____________ wear safety goggles in this area due to the risk of injury.
Answer: have to
Oops!
Okay!
She ____________ explain her absence yesterday since it wasn’t mandatory to attend.
Answers: didn’t need to / didn’t have to
Oops!
Okay!
We ____________ pay for parking at our office, but the spaces are limited.
Answers: don’t have to / don’t need to
Oops!
Okay!
Employees ____________ smoke inside the building. It’s strictly forbidden.
Answer: mustn't
Oops!
Okay!
I ____________ take my ID with me to work today because I’m working from home.
Answers: don’t have to / don’t need to
Oops!
Okay!
You ____________ speak loudly in the library; it disturbs others.
Answer: mustn't
Oops!
Okay!
I ____________ attend the training session last week, but I chose to go anyway.
Answers: didn’t need to / didn’t have to
Oops!
Okay!
She ____________ finish the project yesterday because the deadline was moved.
Answers: didn’t need to / didn’t have to
Oops!
Okay!
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