The traffic slowed down because of the heavy snow in Yushu county, presenting a new __________ to the recovery from the earthquake.
No matter how much you’ve learned and how high a standard of education you have had, you must _______ the people heart and soul.
If you want to sell your product you must _____ it.
New medicines and instruments ______ every day to extend life.
A red sky in the morning ______ to be a sign of bad weather.
Hundreds of jobs _______ if the factory closes.