By the end of last term,they (or ten years.原因!
By the end of last term,they (or ten years.原因!
英語人氣：371 ℃時間：2020-02-27 18:08:35
優(yōu)質(zhì)解答
你好, 盡管看不到整個句子,但根據(jù)短語by the end of last term, 缺省部分應(yīng)該是一個過去完成時結(jié)構(gòu),也就是had+動詞的過去分詞結(jié)構(gòu).
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