- You are at a party with your wife and encounter a senior colleague who hasn't met your wife before. What do you say?   May I introduce you to my wife?

- You are calling Dr Green on the phone. What do you say when his secretary answers the phone?   Good morning, may I speak to Dr Green please?

- You read the following sign outside a shop: "Help wanted! Apply within". What does it mean?   The shop is looking for one or more shop assistants and, if you're interested, you can leave your cv