问题:
—How much if I wan to take one?
—You can take as many as you like because they are free of _____.
A.cost
B.charge
C.money
D.pay
—How much if I wan to take one?
—You can take as many as you like because they are free of _____.
—You can take as many as you like because they are free of _____.
A.cost | B.charge | C.money | D.pay |
参考答案: