Only ____ as a translator _____ how important it is to understand foreign cultures.
A．when did I work; I realized
B．when I worked; I realized
C．when did I work; did I realize
D．when I worked; did I realize
Cao Cao’s tomb is reported ______ in China, which attracts nationwide attention.
A. being found B. to be found
C. having been found D. to have been found
With many forests being destroyed, huge quantities of good earth ______ each year.
A. is washing away B. is being washed away
C. are washing away D. are being washed away
This book is said to be a very special one, because it _______ many events not found in other history books.
A. covers B. writes C. prints D. reads
For quite a few students, their teacher’s advice is more important than ___ of their parents.
A. one B. that C. it D. any
Some scientists believe that it won’t be long _______ robots are widely used in all walks of life．
A． since B． after C． before D． until
