One book is missing.

少了一本书。

《新英汉大辞典》

Guess a riddle, one book is missing, works out one idiom.

给我猜个谜，少了一本书，打一成语。

youdao

I have to point out one page is missing in this book.

我不得不指出这本书少了一页。

youdao

One leaf is missing from this book.

这本书缺了一篇儿。

《新英汉大辞典》

One leaf is missing from this book.

这本书缺了一篇儿。

《新英汉大辞典》