You're right. Anti-social means to not be social. An antisocial person is usually a person that keeps to themselves, and doesn't enjoy talking to others. for instance if you're somewhere with a group of people and everyone is talking except you, someone may say "why are you so antisocial today?" Which basically means "why aren't you saying anything"

Need smn someone to check the sentences/  in advance!

I'll highlight the new words by writing them on a CAPS LOCK mode.

1. His project received an APPROVAL of by the majority of the people.
2. He was APPOINTED to help the teacher by with preparing the necessary tools for experiments.
3. Cat and dog are often thought to be INCOMPATIBLE animals.
4. I need to CONFER with my boss before planning a holidar holiday trip to Italy.
5. It was rainy for three CONSECUTIVE days.
6. IGNORANCE isn't as awful as the RELUCTANCE to study.
7. It's important to sit up straight , if you don't want to have problems with your POSTURE.
8. The governement suddenly SUPERVISED all the bakns banks at in the country.
9. There are grow a lot of is a growth of marvelous flowers near the BROOK.
10. All of us need to be very CONSIDERATE to the elderly.
11. I love eatinf eating the CRUST of the bread.
The meduim THICKNESS of the EARTH's CRUST is approximately 35-40 kilometres.
12. She has broken up with Tom because he had always DEGRADED her in front of her friends.
13. The governement ENTITLED the banks to make their own BANKNOTES.
14. The bandit was ESCORTED to the prison by the SQUAD of professional warriors.
15. He is well-known for his FACULTY to MULTIPLY big numbers immediately.
16. There is a big PILE/HEAP of waste near our park.
17. When there's summer in the NORTHERN HEMISPEHRE, it's winter in the SOUTHERN one hemisphere. 
18. The judge needs to be impersonal unbiased to make a fair decision (maube I should use there another verb, for example, "render a decision"?).
19. To win the company in the computer game you need to seize the SANCTUARY of the center of the map and destroy all the TROOPS near it.
20. He RENDERED him inestimable SERVICE when then PUT IN A GOOD WORD with his boss.

 Slept and slept

Today, Saturday, I was all spent the day sleeping. I think as I was working because I worked hard last week and tiredness came to my body became tired and I just wanted to slept sleep and slept! Sometimes the body tells us that we have need to rest, but I did not like it because I feel felt like I had lost the day and I could have been doing other things, but when the body needs rest we have to obey.

Yes, that's correct