A:Do you know the Great Wall?
B:Yes,it is a length of about 8800 KM.
A:Where is it?
B:It is in the north of China.
A:It is a place that is worth visiting.
B:Yes,Let's go this summer vacation.
A:Do you know the Great Wall?
B:Yes,it is a length of about 8800 KM.
A:Where is it?
B:It is in the north of China.
A:It is a place that is worth visiting.
B:Yes,Let's go this summer vacation.