Question

Fill in the blanks with the most appropriate words-
She was ____ duty and had to stay ____ the classroom ____ classes.
A) After/ at/ at
B) On/ in/ after
C) On/ at/ at
D) In/ in/ in
E) On/ with/ at

Answer 1

Hint: Prepositions are used to indicate the position of a noun or a pronoun and they also reveal the relationship of the noun or the pronoun to something else.

Complete step by step answer:
As given in the hint, prepositions can be used to link nouns or pronouns to other words given in a sentence.

We always place the subject and the verb before a preposition, followed by the noun.
Example- She ate her lunch on the table.

Let’s look at some useful prepositions-
(i) The preposition ‘on’ is used to indicate the position or the situation of something. Example- She is on the phone right now.
(ii) The preposition ‘in’ is used to indicate a location or a place.
Example- She is in the hall.
(iii) The preposition ‘after’ is used to indicate something that will happen after an existing action.
In the given question-
1. X was ‘on’ duty: We have used ‘on’ because we are explaining her situation.
2. and had to stay ‘in’ the classroom: We have used ‘in’ because we are specifying a location.
3. ‘after’ classes: We have used ‘after’ because we are indicating an action that would take place after the classes end.
Now, let’s examine the given options:
a) The formation of the sentence is inaccurate and produces an illogical meaning. Hence, it is an incorrect option.
b) The formation of the sentence is accurate and expresses a complete meaning. Hence, it is the correct option.
c) The given option is inaccurate. Hence, it is an incorrect option.
d) We cannot use ‘in’ for all the blanks. Hence, it is an incorrect option.
e) The usage of the given prepositions changes the meaning of the sentence. Hence, it is an incorrect option.
The correct answer is Option ‘b’.

Note: It is important to choose the correct preposition or else you will change the meaning of the whole sentence.