Explanation

The reporting verb "said" is in the past tense, so the reported speech must also shift to the past perfect.

Therefore, "He said that he had written the letter" is the correct indirect narration.

Explanation

The phrase "By this time tomorrow" refers to a point in the future by which something will be finished.

The correct tense is future perfect: will have + past participle.

Explanation

The word "usually" indicates a habitual action, so we use the simple present tense.

"She usually gets to office by 9 a.m." is grammatically correct.

Explanation

I went to the shop to buy some chocolate.

We use "to + verb" (called the infinitive form) to express purpose

Subject + verb of movement + to + base verb

Explanation

Be precise in your language.

 Native speakers say: Be precise in your language.

Saying "Be punctilious in your language" sounds overly formal or awkward unless you're writing literary or old-fashioned English.

Explanation

 Use "many" with countable nouns (like "people").

There aren’t many people here.

یہاں زیادہ لوگ نہیں ہیں۔

Explanation

The color will not suit your complexion.

Suit (verb) = to be appropriate or look good on someone.

Explanation

The country's autocratic ruler required his citizens to seek official permission before changing jobs.

Explanation

 "The manager acknowledged receipt of my letter promptly."

Correct and natural; the standard phrase is “acknowledged receipt.”

Explanation

 "The manager acknowledged receipt of my letter promptly."

Correct and natural; the standard phrase is “acknowledged receipt.”