When Nanjing Metro Line 3 came into use, it became much to travel from the north of the Changjiang River to the city centre.

Tom won a car in prize-giving sales.— What a(n) man!

you beento the Great Wall—Perhaps notin my memory. ________, it might have been during my early childhood.

How many times have you been to China?—In fact, it is the first time I __________ here

The students ________ all day in the park.