Question

【题目】Everything is________sale on black Friday, some even up to 80% off.

A.forB.onC.withD.at

Answer 1

【答案】B

【解析】

句意：黑色星期五那天所有的东西都在打折，有的甚至打8折。

考查介词。for为了；on在……上面；with用；at在；on sale表示“廉价出售”，根据“some even up to 80% off.”可知商品打8折，可推测出此处是“廉价出售”，所以用“on”，故选B。