PREPOSITION:- A preposition is a word used to nouns, pronouns , or phrases to other words within a sentence. They act to connect the people, object, locations of a sentence.  A simple way to think about prepositions is as the words that help glue a sentence together. some prepositions are: in, of, for, after, before, from, at, about etc.

Preposition of Time and Date: -

You use preposition of time to talk about something that happens at a particular moment or something that lasts for a particular period:

• The birds start singing before sunrise.
• The car wont be ready until Friday.
• We visited several museums during our holiday.
• My grandparents have lived in Taiwan since their retirement.

The object of a preposition of time is often a date, a time, or a number of hours, days etc.:

• My sister was born in 2008.
• The bus arrived at half past ten.
• He had been waiting for two hours.

Use of 'At' :

“At” is only used to describe specific times. It might be to describe a particular numerical time on the clock, or it could also be used to refer to particular and specific events or times of day. Examples :

• Her train is arriving at 8 o’ clock.

Use of 'On' : 

“On” is a very particular preposition of time, that is only used with specific days, dates or named days. For instance, you would use “on” to refer to a calendar date, a day of the week, or a special day that can be named by its significance, such as a birthday or anniversary. Examples :

• On 12 March, I first learnt to swim.

Use of 'In' :

“In” is used in phrases that describe a more general period of time, that doesn’t have a specific clock time or time of day. Examples : 

• We got up very early in the morning .

Use of ' For'  : 

• I’ve been waiting for 20 minutes .

In the question : -

1. My sister was born in 2008 . In this sentence , the correct preposition of time and date is in as it is used to show the specific clock time or time of day.

2. The bus arrived at half past ten. In this sentence , the correct preposition of time and date is at as it is used to show the specific times.

3. He had been waiting for two hours. In this sentence , the correct preposition of time and date is for as it is used to show  how long something lasts or continues .

Thus , the Correct Option is B , which is in , at , for .

PREPOSITION:- A preposition is a word used to nouns, pronouns , or phrases to other words within a sentence. They act to connect the people, object, locations of a sentence.  A simple way to think about prepositions is as the words that help glue a sentence together. some prepositions are: in, of, for, after, before, from, at, about etc.

Preposition of Time and Date: -

You use preposition of time to talk about something that happens at a particular moment or something that lasts for a particular period:

• The birds start singing before sunrise.
• The car wont be ready until Friday.

The object of a preposition of time is often a date, a time, or a number of hours, days etc.:

• My sister was born in 2008.
• The bus arrived at half past ten.

Use of 'At' :

“At” is only used to describe specific times. It might be to describe a particular numerical time on the clock, or it could also be used to refer to particular and specific events or times of day. Examples :

• Her train is arriving at 8 o’ clock.

Use of 'On' : 

“On” is a very particular preposition of time, that is only used with specific days, dates or named days. For instance, you would use “on” to refer to a calendar date, a day of the week, or a special day that can be named by its significance, such as a birthday or anniversary. Examples :

• On 12 March, I first learnt to swim.

Use of 'In' :

“In” is used in phrases that describe a more general period of time, that doesn’t have a specific clock time or time of day. Examples : 

• We got up very early in the morning .

In the question : -

1. Her birthday is on 20 November. In this sentence , on is the correct preposition of time and date as it is used to show the specific days, dates or named days.

2. The shop closes at midnight. In this sentence , at is the correct preposition of time and date as it is used to show show specific time.

3. Do you think we will go to Jupiter in the future? In this sentence , in is the correct preposition of time and date as it is used to show the general period of time, that doesn’t have a specific clock time or time of day

Thus , the Correct Option is D , which is on , at , in .

PREPOSITION:- A preposition is a word, phrase or group of words which is used to show the different type of relationship between noun or pronoun in the sentence. They are used to show the time, distance, place or location in the sentence. some prepositions are: at, for, over, on, to, above, below, after, before etc.

Prepositions are used to show the relationship between a noun or pronoun and another word. Examples of prepositions are: in, during, beside, after, for.

Before is used to say that somebody/something is in a position in front of somebody/something 

In the question : The case was put before the judge and the judge decided it within a year. 

Hence, option C is correct.