President Xi Jinping began to visit 4 European countries March, 2014.
Some families raise cows, and _________ grow wheat.
I am a new student in this school, so I have ________ friends here.
I happened to meet an old friend of __________ in the supermarket.
We live _______ a wonderful world _______ a lot of amazing things.
I had ______uncle. He said he saw ______UFO the other day.