【单选题】【消耗次数：1】
This book has been in the works so long that I have lost _____of most of the sources found for me by the staff of the library.
①
trace
②
trail
③
track
④
touch
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相关题目
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I found the book you recommended in the library, ______ is missing.
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the front cover of which
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the front cover of that
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that front cover
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【单选题】
—How long____ you ____the library book? —For three days.
①
have--borrowed
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随机题目
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①
char str[10]= { S ,t, r ,i,n, g,\0};
②
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③
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④
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③
int
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④
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【单选题】
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0