The Chinese abacus(算盘), officially ______ as a cultural heritage at the 8th Annual UNESCO World Heritage Congress, is another symbol of Chinese wisdom.
—My room gets very cold at night. —_______.
He is very popular among his students as he always tries to make them_______in his lectures.
With April 18's railway speedup,highway and air transport will have to compete withservice for passengers.
—Can I smoke here? —Sorry.We don’t allow_______here.
—_______you _______him around the museum yet? —Yes.We had a great time there.