Obligation , prohibition and necessity

You mustn't open the door to strangers. ALLOWED You ... the door to strangers

You didn't need to invite/needn't have invited Becky, but I'm glad you did.

You must / had to go to the museum tomorrow - it's fascinating.

We mustn't / don't have to have a visa , do we?

Shoes have not / must not be worn in the temple

His job involves collecting evidence at the scene of a crime. HAS He ...... evidence at the scene of a crime.

Members of the jury are prohibited from talking to the press. MUST Members of the Jury ..... to the press.

It isn't necessary for suspects to answer police questions. HAVE Suspects ..... answer police questions.

he didn't need to take/needn't have taken a jacket as he already knew it was going to be hot.

Was getting advise from a lawyer really necessary? NEED. Did he really .... advise from a lawyer?

It was good to see you but it wasn't necessary for you to visit me in prison. NEED You ..... visited me in prison but it was good to see you.