The Chinese abacus(算盘), officially ______ as a cultural heritage at the 8th Annual UNESCO World Heritage Congress, is another symbol of Chinese wisdom.
It took me a long time before I was able to fully appreciate what they __________ for me.
—Were you surprised by the ending of the film?—No. I __________ the book, so I already knew the story.
Tom was about to close the window __________ his attention was caught by a bird.
Mary made coffee __________ her guests were finishing their meal.
One Friday, we were packing to leave for a weekend away __________ my daughter heard cries for help.