For question 1-7,choose the best answer from the four choices mar_英语解答

For question 1-7,choose the best answer from the four choices marked A B C and D .
在这个句子中为什么要用marked,而不用mark,有必要用过去式吗?

人气：422 ℃　时间：2020-05-13 19:09:03

解答

表示被动,不是过去式,原句是choices that are marked.是一个定语从句