A group of travelers were having dinner in a restaurant .While they were eating fish, they began to tell stories about finding valuable stones inside fish .
An old man ,who had listened to their conversation quietly ,said at last ,”Now I’m going to tell you a true story of my own .When I was young ,I worked in a large company in London .As is usual with other young people ,I fell in love with a pretty girl .Soon we were engaged .Two months before our marriage ,I was suddenly sent to Edinburgh on business .My stay was a bit longer than I had expected .At last my work was done and I left for home .Before I left Edinburgh , I bought a nice diamond ring for my sweet-heart .On my way to London ,I was looking through a newspaper .It was then that I learned of my sweet-heart’s getting married to another man. I was so sad that I threw the diamond ring into the water. A few days later, when I was eating fish ,I bit on something very hard .What do you think it was?
“The diamond ring ,” shouted his friends . “No,” said the old man sadly ,It was a fish bone.
The young man bought a diamond ring ______

A．soon after he started working in Edinburgh .

B．when he got engaged to his sweet-heart .

C．after her marriage.

D．when he was going to return.

The man was very angry because _______

A．he threw away his diamond ring.

B．his sweet-heart had married someone else

C．he had been away longer than expected

D．a hard stone gave him a terrible pain

The other travelers expected the old man to ____

A．get back the diamond ring

B．bite on a stone

C．find a fish bone

D．tell an interesting but untrue story.