"I don't want to ___________, but I did really well on the test."

Solution

The idiom "toot your own horn" means boasting about your achievements or abilities. In this case, the speaker is acknowledging that they did well on a test but doesn't want to appear to be boasting. The other options are unrelated idioms. a) Pull someone's leg - Playfully tease or joke with someone, often by telling them something that is not true to see if they believe it. b) Kick the bucket - Euphemism for dying or passing away. c) Let the cat out of the bag - Accidentally reveal a piece of secret or confidential information. d) Toot my own horn - Brag or boast about one's accomplishments or abilities. e) Hit the nail on the head - Accurately identify or describe the root cause of a problem or issue. Find the errorneous part in the given sentence.