The Chinese people consider dragons as a ____ of China.
I’ve bought an English dictionary which you can ____ if you meet new words.A get to B come to C refer to D look up
Every possible means_____ been tried,and we find only______ this means can we do it well.
Because of too many differences between the two sides, a lot of questions are still left ________.A in the air B on the air C by the air D through the air
______ it is to learn English on the internet!
Would you____holding this box for me while I open the door?