Last year the number of studects who gra
问题:
Last year the number of studects who graduated with a driving licence reached 200,000, a(n) ________of 40,000 per year.
A.average
B.number
C.amount
D.quantity
Last year the number of studects who graduated with a driving licence reached 200,000, a(n) ________of 40,000 per year.
A.average
B.number
C.amount
D.quantity