Achieving a high degree of proficiency in English as a foreign language is not a mysterious _____ without scientific basis.
When the market economy is introduced, many factories will not .
This is an illness that can total blindness if it is left untreated.
Our chemistry teacher a better way of working out the problem this morning.
-What do you think of store shopping in the future?-Personally, I think it will exist along with home shopping but ______.
The new stadium being built for the next Asian Games will be ______ the present one。