برای رفع اشتباهات گرامری در متن داده شده، میتوان به صورت زیر آن را تصحیح کرد:
1. **Mark and his wife is from France.**
Correct: Mark and his wife **are** from France.
2. **They are stay in Iran in Fajr Hotel for three days.**
Correct: They are **staying** in Iran at Fajr Hotel for three days.
3. **There are a map of Tehran on the wall's the hotel.**
Correct: There **is** a map of Tehran on the hotel's walls.
4. **They want to buy some gifts for they sons and daughter.**
Correct: They want to buy some gifts for **their** sons and daughter.
5. **Mark's wife like Iranian ceremonies.**
Correct: Mark's wife **likes** Iranian ceremonies.
6. **Their children not travel with them every year.**
Correct: Their children **do not** travel with them every year.
7. **Now, Their children are in France.**
Correct: Now, their children are in France. (نیازی به تغییر گرامری نیست، اما حرف بزرگ 'T' به کوچک تبدیل شده)
8. **They are celebrating their New year festival. It’s name is Christmas.**
Correct: They are celebrating their New Year festival. **Its** name is Christmas.
بنابراین، پاسخ صحیح به صورت زیر است