The little boy was so careless with his spelling that he oftenletters from words.A. left o

问题补充：

The little boy was so careless with his spelling that he oftenletters from words.

A. left off

B. left behind

C. left out

D. let alone

答案：

A. left off

B. left behind

(答案→)C. left out

D. let alone

解析：考查短语辨析。leave off停止，结束，leave behind 遗留，leave out 遗漏，漏掉，leave alone 不理会。根据句意小男孩经常从单词中漏掉一些字母。故选C。