1. be concerned about 关心;挂念
eg. In this age of globalisation, China is also a partner - which is why we should all be concerned about the challenges ahead.
在这个全球经济一体化的时代,中国也是一个参与者——这就是为什么我们都应该关心即将到来的挑战。
2. be supposed to do 应该
3. have a long memory 记性不错