The Great Wall istourist attraction that millions of people pour in every year.
so a well-known
a so well-known
such well-known
such a well-known
________ is known to everybody, Taiwan is a part of China. We must unify it.
The time is not far away ________ modern communications will become widespread in China’s vast countryside.
I hope that the little ________ I have been able to do does good to them all.
There are several research centers in China ________ a certain disease called Bird Flu is being studied.