问题
选择题
The little boy was so careless with his spelling that he often ________ letters from words.
A．left out
B．left behind
C．left off
D．let alone
答案
答案：A
解析 考查动词短语辨析。leave out遗漏；leave behind留下，遗留；leave off停止，中断；let alone更不用说。依据前面提及的careless可知，这里应该是将单词的字母遗漏了。故选A项。