________the foreign friends here is over 400. And ________them come from the USA. A.The number of; the number of B. A number of ; a number C. The number of ; a number of D. A number of ; the number of
—It’s reported that Nanjing Metro Line 3 was in service __________ April 1,2015.
—What _________ exciting news! I believe the public transport system of Nanjing will be much better.