Hi there! 
 
I have a doubt about the usage of these two words. I know that they can sometimes be used interchangeably, as for example in:  
A) 
Each / 
Every time I see you, you look different.  
But my grammar book says that in these other two examples is not possible to use both:  
B) Our football team is playing well. We've won 
every game this season. (Each is not correct)  
C) I tried to phone her 2 or 3 times, but 
each time there was no reply. (Every is not correct)  
Could anybody shed some light on this?  
Thank you very much in advance!! 
