Do you know our school at all?—No, this is the first time I ________ here

people were worried because Malaysia Airlines Flight M370 , with more than passengers and crew, was missing on March 8 , 2014.

ct, the renovation is just one move in a huge project to improve Chinese teachers’ housing ______ in recent years.

How do you find your new classmates—Most of them are kind，but________is so good to me as Bruce．

As we all know ,Columbus America and Edison light bulbs.