⑴How long is the Great Wall ?

⑵How big is Beijing ?

⑶How old is your father ?

⑷How many people are there in your family ?

⑸How much is the cheese ?

A. It's ten yuan.

B. There are five people in my family.

C. He is thirty-five.

D. It's got about twenty million people.

E. It's more than twenty thousand kilometres.