Hello everyone!

I wonder if I could have this exercise corrected, yes, seems that I decided to study with books by doing exercises. I prefer learning in a "free" way, but, I can't.
Okay, I have to choose between four words to fill in the gaps, don't get terrified if they are all wrong, I'm awful!
The ability to weep is a uniquely human form of emotional response. Some sientists have suggested that human tears are (0)
evidence of an aquantic past - but this does not seem very likely. We cry from the moment we enter this (1)
world, for a number of reasons. Helpless babies cry to (2)
communicate their parents that they are ill, hungry or uncomfortable. As the (3)
develop they will also cry just to attract parental attention and will often stop when they get it.
The idea that (4)
having a good cry can do you (5)
good is a very old one and now it has scientific (6)
validity since recent research into tears has shown that they (7)
contain a natural painkiller called enkaphalin. By (8)
fighting sorrow and pain this chemical helps you to feel better. Weeping can increase the quantities of enkaphalin you (9)
produce.
Unfortunately, in our society we impose restrictions upon this naturally (10)
treating activity. Because some people still regard it as a (11)
sign of weakness in men, boys in particular are adminished when they cry. This kind of repression can only increase stress, both emotionally and physically.
Tears of emotion also help the body (12)
rid itself of toxic chemical (13)
remains, for there is more protein in them than in tears resulting from cold winds or other irritants. Crying comforts, calms and can be very enjoyalbe - (14)
consider the popularity of the highly emotional films which are commonly (15)
called 'weepies'. It seems that people enjoy crying together almost as much as laughing together.
1. World/ Place/ Earth/ Space
2. Communicate/ Persuade/ Inform/ Demonstrate
3. Evolve/ Change/ Develop/ Alter
I chosed "develop" because I had a feeling, but, doesn't "evolve" mean the same? Is there a big difference between them?4. Doing/ Making/ Getting/ Having
5. Better/ Fine/ Good/ Well
6. Validity/ Truth/ Reality/ Reason
7. Contain/ Retain/ Hold/ Keep
8. Struggling/ Fighting/ Opposing/ Striking
9. Construct/ Achieve/ Provide/ Produce
10. Curing/ Treating/ Healing/ Improving
11. Hint/ Symbol/ Feature/ Sign
12. Release/ Rid/ Loosen/ Expel
13. Rubbish/ Waste/ Leftovers/ Remails
14. Consider/ Remark/ Distinguish/ Regard
15. Named/ Entitled/ Subtitled/ Called
Thanks in advance for your pacience!