B 現(xiàn)在完成時
他的父母都很難過 很可能已經(jīng)知道發(fā)生了什么
Both his parents look sad.Maybe,they___what'shappened to him.
Both his parents look sad.Maybe,they___what'shappened to him.
A.knew B.have known C.have been know D.had known
實在感激不盡!
A.knew B.have known C.have been know D.had known
實在感激不盡!
英語人氣：743 ℃時間：2019-10-19 18:17:08
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