Explanation

The correct sentence is: She was preparing for the presentation.

This sentence is in the past continuous tense.

It indicating that the action of preparing was ongoing at a specific point in the past.

Explanation

Boar- intact male pig, 

female boar is called a 'sow'.

Explanation

Give Up is a phrasal verb.

Give up means  ترک کردینا یا چھوڑدینا

Shahid has given up gambling means شاہد نے جوا کھیلنا چھوڑ دیا ہے

Explanation

Go with means to suit.

With is a preposition here.

Your tie does not go well with your shirt آپ کی ٹائی آپ کی قمیض کے ساتھ ٹھیک نہیں ہے۔

Explanation

Important gives vowel sound.

We use an when there is a vowel sound.

We use a when there is consonant sound. 

We use the for particular things.

A, An & The are called Articles. 

This is an important historical event. 

Explanation

She resembles her sister is the correct sentence which means وہ اپنی بہن سے مشابہت رکھتی ہے

Do not use with after resemble.

Resemble is a main verb not noun here.

Explanation

Usage of BETWEEN and AMONG

Between دو کے درمیان

Among دو سے زائد کے درمیان

Najma stands between Shazia and Amina.

Divide these biscuits among these four children.

Explanation

Generally expert is followed by in.

In is a preposition here.

Aslam is expert in drawing اسلم ڈرائنگ میں ماہر ہے

Explanation

Usually the word Work is followed by preposition On.

I am working on this topic.

She is working on arithmetic.

He is working on a new project.

Explanation

We generally use preposition for with famous and notorious.

Famous for something means کسی چیز کیلئے مشہور ہونا

Notorious for something means کسی چیز کیلئے بدنام ہونا