It’s said that he’s looking for a new job, one ______ he can get more money to support his family. 

_______ difficult the task may be, we must finish it on time, because we can’t meet such a precious opportunity _______ we have expected.

I don’t like Xiao Shenyang’s performances ________ many people like them.

There was an old man wandering about the corner  _____ waiting for someone.

(2013·浙江温州二模)Scientists have found evidence ________ global warming caused the world's first horses to become smaller nearly 50 million years ago.