Question

Choose the appropriate preposition and fill in the blank:

I had never seen so many people before. I was astonished ____ the crowds.

• A. with
• B. at
• C. of
• D. for

Answer 1

The correct option is B at

A preposition is a word which comes before a noun or a pronoun and establishes a relationship between the elements of a clause or words. Option B)at is correct as it is used to express a cause. The other options are wrong as with, of, and for indicate inclusion, possession, and a purpose respectively. These uses don't fit in the given question. The correct answer is B)at.