题目应该是这样吧：
The most important characteristics ___ a good teacher must have patient and creativity
空格处应该是are, 因为特征是复数，词典上例子有：
These characteristics are not just important in our business, but in every business, as well as in government, philanthropy, and academia.
这 些特征不仅仅对我们的行业非常的重要，对任何行业都是如此，政府部门，慈善事业还有学术界。
例子来源：有道词典