Write the idiom for the given phrase.

A strange person.

A queer fish

Sure, here are the idioms for the given phrases:

• A strange person - A queer fish.
• A snake in the grass - Someone who is secretly treacherous or harmful.
• A witch hunt - A search for people who are suspected of being witches, often based on false or exaggerated evidence.
• A fool's errand - A task that is doomed to failure.