Explanation

 Chinese inventions has changed the whole world during the course of history.  

Explanation

Ten years ago, the earthquake destroyed the city. دس سال قبل زلزلے نے شہر کو تباہ کردیا تھا۔

We normally use ago with the past simple.

We don't use it with the present perfect: I received his letter four days ago.

Not: I have received his letter four days ago.

We should use past indefinite tense for a point of time.

Explanation

Past Perfect Tense use here therefore would not have been is the right usage.

Explanation

The word poetry is changed into plural like this- The pieces of poetry or sometimes poems is used as the plural form of poetry.

Explanation

Discover دریافت کرنا

Invent ایجاد کرنا

Assemble اکھٹے کرنا

Build تعمیر کرنا

Marconi  invented the Radio مارکونی نے ریڈیو ایجاد کیا 

Explanation

A person looking for sympathy speaks "plaintively."

It means in a sorrowful or mournful tone.

It often seeking empathy or pity from others.

Explanation

If he had followed the instructions, he would have completed the task on time.

اگر وہ ہدایات پر عمل کرتا تو وقت پر کام مکمل کر لیتا۔

This is used in a third conditional sentence to express a hypothetical situation in the past that did not happen.

Explanation

We word complain is followed by to/about.

To & about are prepositions here.

Complain to someone کسی انسان سے شکایت کرنا

Complain about something کسی معاملے پر شکایت کرنا

The teacher complained about his rude behaviour. 

Explanation

Usage of “In” & “On” in case of time

We use “In” for the given time span.

We use “On” for scheduled time.

We reached the railway station in time. 

Explanation

This is a simple sentence of Present Indefinite Tense.

Simple Sentence Formula: Subject + Verb first form/s,es/ies+object