they didn't clean the classroom yesterday.the classroom ___ ___ yesterday.
they didn't clean the classroom yesterday.the classroom ___ ___ yesterday.
改為被動(dòng)語態(tài)!
改為被動(dòng)語態(tài)!
英語人氣：694 ℃時(shí)間：2019-10-19 05:27:13
優(yōu)質(zhì)解答
wasn't cleaned.首先根據(jù)yesterday確定是過去時(shí)態(tài),所以be動(dòng)詞一定是was,加上否定詞not,然后把clean改為過去分詞就好.
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