"Who Moved My Cheese?", ____________ is a best-selling book, is written by Spencer Johnson.
_____ unemployment and crime are high, it can be assumed that the latter is due to the former.
It was a matter of________ would take the position.
it rain tomorrow, we would have to call off the hike.
The government has decided to give preference to those environmently-friendly business and companies in all aspects in _______ of sustainable development.
The Voice of China is such a popular program with viewers has produced many a music-lover.