sir

May I take your order, sir?

Dear Sir or Madam,

Excuse me, sir.

What does this machine do, sir?

Yes, sir. Straight away. Paris! Again!

Hello, sir. May I ride a camel?

OK. And you, sir?

Are these three bags yours, sir?

Sir, we serve everyone.

'Good evening, sir,' said the receptionist when John arrived at the hotel.

Dear Sir or Madam, ...

The British scientist, Sir Alexander Fleming, discovered penicillin by accident.

Help me, sir!

Yes,sir. Can we touch the animals?

‘Report back to me in an hour, sergeant.’ ‘Yes, sir.’

Sir! You dropped your wallet.

Can I help you, sir?