Explanation

The preposition “of” shows possession.

کتابیں خوشی ایک بہترین ذریعہ ہیں۔

Books are a great source of happiness

Explanation

Explanation

If you work really hard, you will get good score in the upcoming examination.

Formula for Type One conditional sentences: if/when + present simple, will + infinitive.

Explanation

We generally use were with you.

Were shows past tense.

Where were you born means آپ کہاں پیدا ہوئے

Explanation

 Convert the speeds of the trains from km/h to m/s

1 km/h = 1000 m/3600 s

Speed of the first train = 60 km/h = (60,000 m/3600 s) m/s = 16.67 m/s.

Speed of the second train = 45 km/h = (45,000 m/3600 s) m/s = 12.50 m/s.

Relative speed = Speed of the first train - Speed of the second train = 16.67 m/s - 12.50 m/s = 4.17 m/s.

Distance = Length of the second train = 500 meters.

Using the formula:

Distance = Speed × Time

Time = Distance / Relative speed = 500 meters / 4.17 m/s = 120.05 seconds.

To convert the time from seconds to minutes, we divide by 60:

Time in minutes = 120.05 seconds / 60 = 2 minutes (approximately).

Therefore, the first train will cross the second train after approximately 2 minutes.

Explanation

Here 'Yesterday' shows something happened in the past.

Second form of a verb is used in Past Indefinite Tense.

Met is the second & third form of Meet. 

Explanation

Preposition Identification:

"In" is a preposition showing the relationship between "got lost" and "the dark" (indicating the circumstance or environment).

Prepositions (e.g., in, on, at) link nouns/pronouns to other words in a sentence.

Explanation

"Goes" is the present simple tense of the verb "go".

It describes a habitual or regular action happening in the present.

Explanation

incorrect:  She is married with a pilot

correct: She is married to a pilot

Married in active voice = girl married with boy

Explanation

"Nice" is an adjective.

In this sentence, we need an adverb to describe how we play.

The correct adverb form of "nice" is "nicely".

The correct adverb placement is after the verb "play".