When you worry you can't sleep and when you can't sleep you worr

When you worry you can't sleep and when you can't sleep you worry ______.
A、much more
B、even more
C、many more
D、few more
【正确答案】：B
【题目解析】：much more更加；even more更多地，更加地；many more更多的，（可修饰可数名词）；句意：当你担心的时候你睡不着，当你睡不着的时候你更担心。