I am astonished . . . . . . . . his behaviour. A. to B. from C. at D. on

April 15, 2024 by rawan239

other prepositions are not as appropriate in this context. “To” is used to express motion towards a destination. “From” is used to express motion away from a starting point. “On” is used to express a position on a surface.

Here are some examples of how the preposition “at” can be used to express surprise, astonishment, or amazement:

• I was astonished at his behavior.
• I was amazed at her beauty.
• I was surprised at the news.
• I was shocked at the accident.