The Chinese are looking forward to the first _______to land on the moon after three Chinese astronauts’ successful trip to space.      

 To have a good performance in the coming speech contest, first of all, you  should know your ______.

People say, “Guilin’s scenery is superb in the world.” It was not until I visited the place that I found it really worthy of the _______.  

----Where is Mary?   ----At ____.

 It is hard to imagine a large city without policemen, but such was the ______ in London in the early 18th century.