________ is known to all, China will be an _______ and powerful country in 20 or 30 years.
The teacher told us that practice____ perfect.
What I like best, to tell you the truth, ____, in my opinion, the books my brother bought me as my birthday present last week.
Qiong Yao with her works____ very popular with us young people.
____ is what he did, not what he said, that moved us greatly.
He told me that he would remember the days in Beijing University forever____ he got much help there from Professor Zhu.