Explanation

I was tired so I didn't go to the office.

میں تھک گیا تھا اس لیے آفس نہیں گیا۔

"So" indicates a cause-and-effect relationship between being tired and the decision not to go to the office.

Explanation

Lack in means کمی ہونا

In is a preposition here. 

Even educated persons were lacking in table manner.

Explanation

This is a hypothetical sentence. 

Were is used with I in such sentences.

If I were you, I would not do it means اگر میں آپ کی جگہ ہوتا تو یہ نہیں کرتا

Explanation

Put Up قیام کرنا

Put on پہننا

Put off ملتوی کرنا

Put out بھجانا

Put up with برداست کرنا

She put on a sweater and went out.  

Explanation

This is a conditional sentence as it shows a condition.

conditional sentence means شرطیہ جملہ 

Explanation

If it rains, we will stay indoors.

The first conditional expresses a real possibility in the future.

It using the present simple tense in the "if" clause and "will" in the main clause.

Explanation

Article "A" is used before "Europe".

Here European sounds similar to 'Y', not 'E'. So, we should use 'a'.

Explanation

• This sentence is a conditional sentence because it expresses a condition (studying hard) and its consequence (passing the exam).
• The "if" clause introduces the condition, and the main clause describes the outcome that would result from that condition.

Explanation

The sentence should be: "If he had studied harder, he would have passed the exam."

This is a third conditional sentence used for hypothetical situations in the past.

Explanation

Unless aid arrives, thousands will starve.

Here starve means بھوک سے مرنا

This is a conditional sentence.

We use 'will' in second clause in such type of sentences.