In the past few years, so many areas throughout the world have been hit by such destructive earthquakes, snowstorms and tsunamis ________ we have never experienced before, ________ makes us worried a lot about nature disasters.

Word came from Chile         at least 300 people were killed in the 8.8-magnitude earthquake.

______the news, so far, has been good, there may be bad days ahead.

We should consider the students’ request ______ the school library provide more books on popular science.

______ some problems have arisen in the process, we are confident that we can handle them.

Not until I had arrived home______ my appointment with Michael Smith.

--- Excuse me, I wonder if you can help. I have lost my ID card.
---- But where______ you______ it?

The islands developed on their own for 80 million years and ________ have many rare animals found nowhere else.

________Chinese culture with overseas cultures is a challenging job, but you will learn a lot from it.

----He is fluent in English because he once stayed in London ．
---- Really ? How long _________ there ?