—It’s a long time ________ I saw you last.—Yes,and what a pity it is now that it will be a long time ________ we see each other again.
The Great Wall is _______ tourist attraction that millions of people pour in every year.
–- Excuse me, would you mind answering a few questions? --- Well, I don’t know. I’m in a hurry _______.
An elderly woman ______ the counter and asked to be shown some earrings.
It is requested that each of the teachers invited ______ a performance at the party.
Having lived in China for 8 years, Helen has a good _______ of both English and Chinese.