Explanation

"Arraign" is synonymous with "accuse." means الزام لگانا

Explanation

Validate means جائز ثابت کرنا

Disprove means غلط ثابت کرنا

Repudiate means مسترد

Explanation

Corrected narration:
"He said that if he worked hard, he would pass the exam."

In indirect speech, we change the present tense to the past tense. "Will" becomes "would," and "I" becomes "he."

Explanation

fly in the face of mean: completely oppose

to completely oppose what seems sensible or normal

Explanation

"Mr. Ali teaches very well, doesn't he?"

The correct question tag for "teaches" (a positive statement in the present simple tense) is "doesn't he."

The tag should reflect the auxiliary verb "does" and agree with the subject "he."

Explanation

"One should do one’s duty."
 The sentence is correct as it is. "Duty" refers to a responsibility or task, and the sentence is an imperative general statement.

Explanation

Give up the ghost means to stop trying / کوشش کرنا

Explanation

The idiom "at sea" means to be confused or uncertain about something.

Explanation

A miser avoids spending, and a reserved person avoids speaking.

Explanation

"Please could you tell me where the bus station is?"

"برائے مہربانی، کیا آپ مجھے بتا سکتے ہیں کہ بس اسٹیشن کہاں ہے؟"

"Is the bus station"  (Incorrect word order in an indirect question)

"The bus station was"  (Past tense is unnecessary)

"Is the bus station located"  (Unnatural phrasing in spoken English)