You may find the answers underlined.
Explanation:
The politician avoided answering the reporter’s question, not wanting to open that Pandora’s box.
Allusion: Pandora's box
Purpose: Not opening Pandora's box in this context is an allusion that the politician has a lot to say about the particular question but he chose not to say it to save his reputation.
Alright Romeo, stop kissing in the hallway.
Allusion: Alright Romeo
Purpose: The allusion here is that the person concerned has been found doing the same many times before and is expected to do so.
Well since you can’t click your heels and be home, you might as well sit and wait for the bell to ring.
Allusion: click your heels
Purpose: The allusion is that the person cannot simply get up and leave when they please.