trace&minute&drop

[Angella]

hello! Can anyone tell me what "find a trace" and "last a minute" and "touch a drop" means?thank u very much?

[Quizmonster]

A 'trace' is the smallest evidence of something. For example, detectives will try to find traces of blood at the scene of a violent crime.
'Last minute' - I presume that is what you mean rather than 'last a minute' - means just before the deadline regarding something. For example, "He reached the station at the last minute" means he got there at 10.14 to catch a train that was due to leave at 10.15.
A 'drop' is very much like a 'trace'...ie the smallest part of something, especially liquid. For example, if someone is accused of drinking too much alcohol, he might reply, "I haven't touched a drop for a week!"