there's a discount_____last year's book?A in B about C at D on_英语解答

there's a discount_____last year's book?
A in B about C at D on

人气：298 ℃　时间：2019-12-01 13:16:13

解答

D discount on 打折
Can I get a discount on bargain books?
买特价书有没有折扣?