Explanation

The homework has been completed by the students.

In passive voice, the focus shifts to the object, and "has been" is used with the past participle to show the homework was completed by the students recently.

Explanation

You are requested to give me your pen and take your seat.

This option is polite and correctly conveys a formal request, maintaining the original meaning while using appropriate language.

Explanation

350 runs were scored by our team in the Inter-college Cricket Tournament.

In passive voice, the object of the active sentence becomes the subject, and the verb is in the past participle form, making "were scored" the correct construction.

Explanation

She says that she keeps at an arm's length all those who try to flatter her.

This is the correct way to report the original direct speech sentence in indirect speech.

When converting direct speech to indirect speech:

• The pronoun "I" becomes "she"
• The verb tense remains the same (keeps)
• The sentence structure remains the same

Explanation

Bala's mother asked Bala if he would lock the door.

This is the correct way to report the original direct speech sentence in indirect speech.

When converting direct speech to indirect speech:

• The question becomes a statement
• The pronoun "you" becomes "he"
• The verb tense remains the same (would)

Explanation

She wanted to know what I was doing there.

This is the correct way to report the original direct speech sentence in indirect speech.

When converting direct speech to indirect speech:

• The question becomes a statement
• The pronoun "you" becomes "I"
• The verb tense changes to the past simple ("are" becomes "was")

Explanation

The instructor asked Ronny if he was ready for the race.

This is the correct way to report the original direct speech sentence in indirect speech.

When converting direct speech to indirect speech:

• The question becomes a statement
• The pronoun "you" becomes "he"
• The verb tense changes to the past simple ("are" becomes "was")

Explanation

He said that he was going to buy a new car.

This is the correct way to report the original sentence "I am going to buy a new car" in indirect speech. 

When converting direct speech to indirect speech:

• The pronoun "I" becomes "he" (subject pronoun)
• The verb tense changes to the past simple ("am going to" becomes "was going to")

Explanation

An employee of the bank stole the money.

The original sentence is in past simple passive ("was stolen").

In active voice, it becomes past simple active: "stole the money."

Explanation

A new phone has been gifted by my father on my birthday.

Present perfect passive: has/have + been + past participle.

Object "a new phone" becomes the subject in the passive form.