Explanation

 The preposition "on" is used to specify the exact date or day of the week, and it is also used when referring to a particular year.

Therefore, it is correct to say "born on August 19" and "born on 1990".

Explanation

By is a preposition here.

We generally use verb + ing after a Preposition.

We use "by" to explain the method of success: "He succeeded by working hard."

Explanation

 "Your teachers have"is the correct construction.

"Have" agrees with the plural subject "teachers" and indicates the past tense.

"(B) haven't your teachers" is incorrect because it's in the present perfect tense. The sentence is asking about something that happened in the past, not the present.

"(C) your teacher have" is incorrect. "Your teacher" is singular, so "has" should be used.

Explanation

"Information about people" is the correct prepositional phrase.

We use "about" to indicate the subject of the information.

Explanation

"In the red dress" starts with the preposition "in" and ends with a noun — making it a prepositional phrase.

It describes which girl Hira is, giving more detail about the noun.