1.take a ten-minute → taking a ten-minute
2.between class → between classes
3.or mentally tired → and mentally tired
4.we did something → we do something
5.have real rest → have a real rest
6.getting even tired → getting even more tired
7.is always pleased → is always pleasing/pleasant
8.do some simple exercises → do some simple exercise
9.Sometime I have → Sometimes I have
10.I feel freshly again → I feel refreshed again