Within industries,companies are always trying to develop products that are one step better than _____ of other companies.
In some countries, demand for graduates from MBA courses has ____
In China, a good many traditional customs have____.
Our .English teacher is our favorite. She’s kind and humorous, but____, she is strict with us.
---May I go to the cinema this evening?---____. We should do the voluntary work in the nursing house.
—Don’t you know Li Ming will go abroad? —____, not until you ____me.