分类：教育/科学-学习帮助
问题：高三Allthemorninghewasbusyrepairin 
All the morning he was y repairing the machine, not even stopping _____A不行吗？？？
回答：B.taking breath 
A不行阿，深呼吸是take a deep breath，说明breath作名词用，所以是B啦。