Ifyoubuymorethan10bookswe'llredu

发布时间：2020-07-11 08:17:02

If you buy more than 10 books we'll reduce the cost of each book_______10%.













A.at












B.to











C.for











D.by

网友回答

D解析(1) by 表相差的程度。 (2) 名词用法的cost等于price that is to be paid for
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