题目内容
20.He was so tired out that he found himselfunabe (able) to move out of the hole.分析 他太累了以至于发现自己无法从洞里出去了.
解答 答案:unable
根据语境"他太累了以至于发现自己…从洞里出去了."able to do sth 意为"能干某事"可推知无法从洞里出去了,故填入able 的反义词unable,unable to do sth 意为"无法、不能干某事",故答案为:unable
点评 本题考查用所给单词的适当形式填空,首先要根据语境明确句意,然后再根据相关语法对所给单词在形式上做出正确的变化.
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