http://grammar.ccc.commnet.edu/grammar/adjectives.htm
The -ed ending modifiers are often accompanied by prepositions (these are not the only choices):
We were
amazed at all the circus animals.
We were
amused by the clowns.
We were
annoyed by the elephants.
We were
bored by the ringmaster.
We were
confused by the noise.
We were
disappointed by the motorcycle daredevils.
We were
disappointed in their performance.
We were
embarrassed by my brother.
We were
exhausted from all the excitement.
We were
excited by the lion-tamer.
We were
excited about the high-wire act, too.
We were
frightened by the lions.
We were
introduced to the ringmaster.
We were
interested in the tent.
We were
irritated by the heat.
We were
opposed to leaving early.
We were
satisfied with the circus.
We were
shocked at the level of noise under the big tent.
We were
surprised by the fans' response.
We were
surprised at their indifference.
We were
tired of all the lights after a while.
We were
worried about the traffic leaving the parking lot.