Hello Rabab, and welcome to the forum.
Can you fill the gab[SUP](1)[/SUP] in the following sentence? " my sister received a special gift from her fiance. In a small party [STRIKE]in[/STRIKE] at a [STRIKE]unique[/STRIKE] special restaurant, he gave her the[SUP](2)[/SUP] engagement ring. She felt extremely happy [STRIKE]iness[/STRIKE] and lucky. [STRIKE] ___________ in unbelievable way!"?[/STRIKE]
Note:
1- The word you want there is "gap"; "gab" is also a word in English, but it has a completely different meaning.
www.onelook.com
Practise listening to and pronouncing "p" and "b".
2- If she knew about the ring, then "the" is okay; otherwise, use "an" instead of "the".
3- The last bit "in an unbelievable way" seems too strong, and I don't think it really fits in with the rest of that sentence.