Question : Directions: In the following question, a sentence is given with a blank that is to be filled in with an appropriate word. Four alternatives are suggested; choose the correct alternative out of them as your answer.
Although his brother is blind, he is very fast _______ calculation.
Option 1: in
Option 2: with
Option 3: at
Option 4: about
Correct Answer: at
Solution : The correct choice is the third option.
The correct preposition to use in this context is "at", as the preposition "at" is used when talking about a proficiency or a skill in a particular activity.
Therefore, the complete sentence is: Although his brother is blind, he is very fast at calculation.
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