Проверьте, пожалуйста, предложения на наличие грамматических и временных ошибок.Выделенные

Проверьте, пожалуйста, предложения на наличие грамматических и временных ошибок.
Выделенные жирным слова - словосочетания, с которыми нужно было составить предложения.
1) The famous symbol of non-verbal communication is thumb up that means "It's cool".
2) My sister became a body language expert because she want to help people know when someone is lying (лжет, лжет).
3) I built my reputation on hard work and unusual skills.
4) The powers of persuasion must has people who want to become a magistrate or, perhaps, a famous politician.
5) I try to improve my confidence in myself by communicating with different people and I going to acting classes (курсы актерского мастерства)
6) When I sad, my arms are crossed, I have a downturned mouth and I have my head down.
7) His facial expression changed as soon as he heard the voice of Mary.
8) I hate when people invading my personal space.
9) The final result was a minor matter for him
10) Today I мейд a business deal of all my life.
11) A main attraction in Saint Petersburg is Peter and Paul Fortress.
12) My mum adores to visit the exhibition of хэнд-crafted goods.
13) Some centuries ago, american travelers to broaden the horizons of our world.
14) Coming back to home we are sang song, laughed and swap stories about our life.
15) Look at the gladiatoria fights was for him a common sight.
16) If you know a foreign language, then you will not have language barriers
17) My cat doesn't hiss and scratch, then it's in high spirits.
18) I hope, I'll get the chance to retake the test.