"an amazing jacket"
there are 28 letters in arabic. of those 28, several have up to 4 different versions. people are complaining because we haven't even learned more than 2 versions of only 10 of those letters. People are complaining because they taught us "a, g, l, and x" and expect us to know what "watermelon" means.
About "mark", do you mean the diacritics or Harakaat, such as on مُ? Yes, we may omit it and the word will look like follows: ممتاز. In Arabic, diacritics are not a must as long as we can read the word correctly.
The complete Harakaat will be: مُمْتَازٌ.
Here جاكيت is pronounced as if it was written جاكَيت but in other exercises it's pronounced like جاكْيت. I suspect the right pronunciation should be the English pronunciation with an Arabic accent!
The audio robot often seems to interpret wrongly what is written (probably because the short vowels and similar diacritic signs are not written in daily life) and it's very confusing.
It says, "Hi, I just want to let you know that I will be back at the office on the 27th and will be in the office on Monday. I will be able to remind everyone of the latest trends, the latest updates in the next week and the latest news updates, about our new projects The latest update of the progress of the home, in the future, the next stage of the project will be the new owners, and their wishes will be able to give you a new one that you need in".