--- Do you know the Water Cube(水立方)at all? --- No, this is the first time I _________ here.
It was __________ computer games that cost the young man a lot of precious time that he should __________ on his lessons.
Only ________ we will invite.
–My uncle will be here to attend a meeting tomorrow. --Oh, I though that he____ today.
______ number of people who use English as ______ second language is increasing in China.
This is such a letter ____came last night.