Question

Fill in the blanks with the most appropriate words.
I don’t know why you insist _____ blaming me _____ all your troubles.
(a)On/for
(b)In/for
(c)At/on
(d)Over/for

Answer 1

Hint: Read the given sentence carefully. Try to make out the core meaning of it. Find out the subject, predicate and the object of the given sentence.

Complete answer: In the given question, we have to fill in the blank with the correct preposition. Preposition is a word or phrase that is used before a noun or pronoun to show place, time, direction, etc.
Now, let us examine all the given options to find out the correct option :
(a)On/for-‘On' is a preposition which means supported by or fixed to or touching something, especially a surface. ‘For’ is a preposition which is used to indicate a place.
(b)In/for-‘In' is a preposition which is used to show place, inside or to a position inside a particular area or object.
(c)At/on-‘At’ is a preposition which is used to show where somebody/something is or where something happens. ‘On’ is used to indicate something on a surface.
(d)Over/for-‘Over' is a preposition which means straight above something, but not touching it. This use doesn't fit in the given question.
The correct prepositions to be used here are – on/for. The complete sentence would be –” I don’t know why you insist on blaming me for all your troubles.” Hence, option ‘a’ is the correct option.

Note:All the other options are plausible distractions. You must know the prepositions and their usage.