题目内容
I.将下列句子变为被动语态
2. We had learned 1 ,500 English words by the end of last term.
2. 1.500 English words had been learned (by us) by the end of last term.
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题目内容
I.将下列句子变为被动语态
2. We had learned 1 ,500 English words by the end of last term.