Practice with Nominative and Accusative

.يعمل الاستاذُ في مدرسة
The professor works in a school.
اختان اكلتا الفلافل
Two sisters ate the falafel.
ذهب الى المسجدَ الرجلُ.

Right or you can say 

ذهب الرجل الى المسجدَ 
The man went to the mosque.
يدرس ابن عمي ادارة الأعمال 
My cousin studies business administration.

I am trying to focus on the pronunciation of nouns and objects in these sentences.
I have a couple questions:
1) In a sentence where there is an adjective after a noun, like "Two sisters ate the falafel", do you put a ٌ on اختان?

No don't put it

Because in this case it's. مثني 

Which means two

و المثني يرفع بالالف

Not like المفرد

2) Do you include a ٌ on a subject if there is a pronoun, like in "My cousin studies business administration"?

Sorry I don't understand 

Please explain more 
Thanks so much! I really appreciate the help.

If you don't understand anything I wrote 

Tell me in a comment & I will answer you

Great work 

Go on 

Oh my god 

I thought people here are only interested in learning 

This kind of people are just shame 

I can't imagine why these kind of people are everywhere 

They made me hate social media 

Sorry for that experience 

I hope you'll find a real partner 

& learn all the languages you wanna learn 

Could you correct please?

السنة الماضية سافرت إلى المغرب. أحببت كثيرا هذا البلد لان الناس ممتعون جدا. المناظر الطبيعيه ايضا جميلة.  وصلت إلى مراكش و زرت المدينة القديمة. كان يوجد كثيرا من سياح لذلك لم أحب تلك المدينة. لقد أحببت الجبل، والصحراء و البحر أكثر . ذهبت إلى سيدي إفني حيث تجولت.  أحببت ان التجول بالدراجة قريبا من تارودانت ثم ذهبت الى الحمام. الطعام كان لذيذ خاصة الطاجن و الكسكسي. الشاي أيضاً كان ممتاز. الناس تتحدث اللغة الفرنسية جيدا لكنى تاسفت لأني لا أتحدث اللغة العربية. أجد أن عندما أتحدث لغة البلد كل شئ يختلف. 

Last year I traveled to Morocco. I loved the country because the people are very pleasant. The landscape is also very pretty. I arrived in Marrakech and I visited the old town. There were many tourists so I didn’t like the city very much. I preferred the mountains, the desert and the sea. I went to Sidi Ifni where I surfed. I enjoyed doing some bicycle near Taroudant and then going to the hamam. The food was delicious, especially the tagine and couscous. The tea was also excellent. The people spoke French well but I regretted not speaking Arabic. I find that when I speak the language of the country, everything is very different.