Question

Fill in the blank with a suitable preposition:
The cost-of-living index rose _______ $70$ percent last year.

• A. In
• B. By
• C. On
• D. Up

Answer 1

Answer: (B)

By

The given sentence talks about the rate of cost-of-living.

We can determine the correct answer with the help of logic and by eliminating the incorrect answer.

Up is used to indicate a position.

In and on are used to indicate position, time and place.

We can thus eliminate options A,C,D as incorrect answers.

By is used to indicate means, nearness, time, order, according to, manner or instrument, measure, in the name of. Thus option B is the correct answer.