I wrote these sentences for using the vocabulary I learned, I hope it can help me to improve my English level.
However, I don't know if they are heard naturally.
Expecting your check! Thank you so much!
##vocabulary practice time##
1.There is no doubt that doing such stuff could make people feel a pang of conscience.
2. I have seen many army theme movies these days and I got many brutal scenes.
3. The company created by him ten years ago has gradually evolved into a multinational business group.
4. My contention is that human right is more important than local law.

More natural (just a few tiny things):
1. There is no doubt that doing such things/activities would make people feel a pang of guilt.
2. I have seen many army movies these days, so I've seen many brutal scenes.
(This is kind of a tough one because it sounds a little repetitive. It's ok, though.)
3. The company he created ten years ago has gradually evolved into a multinational business.
(It helps to be in the active form)
4. My argument/point of view is that human rights are more important than local law.
("Contention" is a little strange – it's like a many-way fight between several people. "Argument" is a word that means your addition to some kind of controversy, if that makes sense.)

Hope it helps! Good luck!