Suggestions and Obligations Quiz

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Which modal verb is used to make positive suggestions?

could (correct)

should

must

need to

What is the most formal way to ask for permission?

shouldn't

could

can

may (correct)

Which modal verb is used for obligations of the past?

should

must

had to (correct)

could

Which modal verb is more formal and polite than 'can' when asking for permission?

could Signup and view all the answers

What is the difference between 'can't' and 'must not/mustn't' when expressing prohibition?

'Can't' shows external prohibition, while 'must not/mustn't' shows internal prohibition. Signup and view all the answers

When do we use 'must' to express obligation?

To indicate a strong obligation that comes from the authority that wrote the sentence. Signup and view all the answers

What does 'don't have to' indicate?

No obligation, it's optional to do something. Signup and view all the answers

In what context do we use 'mustn't'?

When the prohibition comes from the speaker. Signup and view all the answers

Which phrase is used for obligations coming from an external source?

'Have to' Signup and view all the answers

Why don't we use 'must' to express obligation in the past?

'Must' cannot be used for past obligations. Signup and view all the answers

You ______ stop at a red light.

must Signup and view all the answers

You ______ make any noise in the library.

mustn't Signup and view all the answers

Can I sit here? You ______ use my car if you like.

can Signup and view all the answers

Could I borrow your pen for a moment, please? ______ I interrupt?

may Signup and view all the answers

We use can't and mustn't to show that something is ______ – it is not allowed.

prohibited Signup and view all the answers

Visitors ______ park in the staff car park.

must not Signup and view all the answers

We sometimes call this 'external ______'.

obligation Signup and view all the answers

You ______ wear a uniform when we're working in reception.

have to Signup and view all the answers

You ______ wear a tie in our office but some people like to dress more formally.

don't have to Signup and view all the answers

You ______ do something if you want to but it's not compulsory.