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问题: 一道题,快啊!!!!!!!!!!!!!!!!!!

到他上大学为止,他已经读了一百本小说
By the time he went to college, he _____ ______ ______ _____ _____ ______

解答:

到他上大学为止,他已经读了一百本小说
By the time he went to college, he _had____ already ___read___ ____one __ ___hundred__ ____novels_


参考文献: 个人观点