The Chinese are looking forward to the first ______ to land on the moon after launching the first lunar exploration satellite，Chang'e­1，successfully.

Many people think it’s very difficult to ______ a conversation with someone who only says “Yes” and “No”. 

—Julia and Colin ended their relationship last year.—what made their marriage______?

Mike didn’t play football yesterday because he had_____ his leg.

As an old sailor, he has ____________ in most parts of the world in his time. He must be interesting to listen to.