The Chinese abacus(算盘), officially ______ as a cultural heritage at the 8th Annual UNESCO World Heritage Congress, is another symbol of Chinese wisdom.
The 2014 FIFA World Cup will be held in Brazil on June 13th, 2014, and 32 football teams_____ so far.
---Did Tom come back late last night? ---No. It was not yet 8 o’clock ____ he arrived home.
Our school has about 100 computers, but only sixty percent ____ used regularly.
Although Rose is very busy, she still ____ a lot of time to her students in her spare time.
---So you missed the meeting. ---____. I got there ten minutes before it finished.