Explanation

 My brother, who lives in Islamabad, is a doctor.

• Correction to original sentence: It should be "My brother, who lives in Islamabad, is a doctor." (with commas).

•  The clause "who lives in Islamabad" adds extra information that is not essential to identify "my brother", making it non-defining.

Explanation

 Loudly barked the dog.

The usual subject-verb-object order is inverted here for emphasis or style.

Normally, it would be "The dog barked loudly."

Explanation

The carpets that you bought last year have rotted.

'that you bought last year' is an adjective clause modifying "carpets."

Explanation

 This sentence has two independent clauses ("She studied hard" and "she didn’t pass the exam") joined by the coordinating conjunction "yet", making it a compound sentence.

Explanation

The sentence says that his remarks alienated many of the attendees and that they were offensive and inappropriate.

We need a word that conveys something extremely bad or shocking.

Egregious = outstandingly bad or shocking (negative — fits the sentence)

Felicitous = well-chosen or suitable (positive)

Decorous = polite and restrained (positive)

Commendable = deserving praise (positive)

Explanation

Serendipity means finding something valuable by chance.

Fortune also refers to good luck or a fortunate event

Explanation

The sentence is in simple past tense, so the passive form should be "was sent."

"A parcel was sent by them on Monday" correctly maintains the tense and structure.

Explanation

He told me that he had the duty.

Present perfect ("have") changes to past perfect ("had") in indirect speech.

Explanation

Active: We do not waste time.

Passive: Time is not wasted by us.

(Subject becomes the object, and the verb is changed appropriately.)

Explanation

Imperative passive sentences starting with "Let" become direct commands in active voice.

"Let the door be shut" → "Shut the door" in active voice.