19.because,may,short,as,like,in,what,good,some,different.
No leaves are exactly the same in the world.Nobody in the world is the same (41)as you.You are the unique(独一无二的).Everybody is (42)different from others.That is good,(43)because it makes the world an interesting place.
Some people are taller than you,but others are (44)shorterthan you.Maybe your hair is the same color as your friend's,but it (45)may be longer than hers.I am sure you have(46)somefriends who are smarter than you.And you also have some friends around you who don't do(47)well in some things.(48)Whatdoes your best friend like to do?Do you both (49)liketo finish your homework at school?Do you both want to wear the same clothes every day?I think (50)insome ways you are the same,but in many other ways you are in different.So say loudly to the world,"I am unique!"