Basically its what the main verb is, so it would be turns because it turns cool and dry.
NEVER “lend” your pencils to people because, let me tell you, you’re not getting them back.
Polonius is using his daughter to spy her conversation with Hamlet. He teaches how to act naturally, how to walk and pretend that she is reading.
In that last phrase, he is saying that we humans often act in deceitful ways, for which we are to blame.
He admits that he is making a mistake, in teaching that kind of behaviour to his own daughter.
Though written about the Salem Witch Trials, The Crucible also conveys Miller’s views on <span>McCarthyism.</span>
Answer: By the time they came, we had finished our dinner.
Came is past tense, so I would assume it would be had finished