The Chinese abacus(算盘), officially ______ as a cultural heritage at the 8th Annual UNESCO World Heritage Congress, is another symbol of Chinese wisdom.
He wrote a lot of novels, none of _____ translated into a foreign language.
He had a lot of friends, but none of _____ could lend him any money.
He had a lot of friends, none of _____ could lend him any money.
He studied as hard as he could _____ to enter a good college.
He ran as fast as he could _____ to catch the bus.