单项选择题
His constant failures in love finally threw him off his （）of mind.
A.moodB.engagementC.sympathyD.balance
单项选择题 Due to the （）difficulty，he has to do several part－time jobs.
单项选择题 Don’t take any action until you are fully（）with the situation there.
单项选择题 He built the team through both hardtraining and （）discipline.
