试题题干
Fill in the blanks with the appropriate words given in the group.
concentrate, concentrated, concentrating, something, anything, nothing
Some 
study each day is better than many study hours one day and the next.
参考答案
试题解析
concentrated集中的，修饰study；nothing 没有；无。句意：每天集中学习比一天学习时间多而下一天不学要好。