问题：
---______ is the population of the town?
---Over 20,000. And a third of the population ____ workers of the car factory.
A.What
B. are
C.How many
D. are
E.What
F. is
G.How many
H. is
---______ is the population of the town?
---Over 20,000. And a third of the population ____ workers of the car factory.
A.What
B. are
C.How many
D. are
E.What
F. is
G.How many
H. is
---Over 20,000. And a third of the population ____ workers of the car factory.
A.What
B. are
C.How many
D. are
E.What
F. is
G.How many
H. is
参考答案：