Question

Choose the appropriate preposition.
A week consists ___________ seven days.
A) For
B) In
C) At
D) Of

Answer 1

Hint: A preposition connects two things. Firstly, a noun, adjective or verb that comes before it, and secondly a prepositional object- a noun phrase or pronoun that comes after the preposition. For instance, this is a gift for you. In this sentence “For” is a preposition that connects two things. ‘This is a gift’ is a noun, adjective or verb which is before a preposition. On the other hand, ‘you’ is a pronoun that is after a preposition. A preposition ‘For’ is connecting both.
Some common prepositions are- at, on, in, to, into, by, from etc.

Complete answer:
In the given question, A preposition should be filled in a blank space which tells that there are seven days in a week.

Option(A) For- This is an incorrect answer. For is used to indicate the reason or to tell the time as well as to specify the use of something. Example- I am really happy for you.
Option(B) In- This is an incorrect answer. It is used to tell location, opinion, feelings, colour, shape, size. It is commonly used to specify day, month, year or any season. Example- I like to play the guitar in the morning.
Option(c) At- This is an incorrect answer. It is used in multiple ways. Firstly, to tell a place. Secondly, to specify one’s activity and furthermore, to tell a time. For example- Meet me at 2:00 pm.
Option(D) Of – This is a correct answer. Of is used to convey information about reference or to tell the relation or belonging of anything. It is also used to specify the number or amount of anything.
Taking into account the given question. Here, of is used to specify the seven days in a week. Seven is indicating the number of days in a week. Therefore, of is a suitable preposition for the blank space.

Hence the correct answer is option ‘D’. A week consists of seven days.

Note: In few cases, the prepositional objects come at or near the beginning of a clause. Then, prepositions don't come along with it. It stays with a noun, adjective or verb at the end of a clause.
The cases are-
Wh- questions: What are you looking at?
Relative structure: This is the house I told you about?
Passives: He likes to be looked at.
Infinitive structures: The village is pleasant to live in.