No matter what happens, you should keep . Just look on the bright side of things.
A. generous
B. optimistic
C. careful
D. practical
网友回答
A. generous
B. optimistic
C. careful
D. practical
解析：A. generous慷慨的，大方的，B. optimistic乐观的，C. careful仔细的，D. practical实际的，句意：不管发生什么，你应该保持乐观。就要看事情的好的一面。根据句意选B。