Answer:
There is a written record that somebody named “Ahlers” knew about Frank's hiding spot and how they had gone into hiding. Ahlers reportedly told his older brother, Cas, that he had betrayed the Franks during the war.
Explanation:
A Subject verb disagreement is when you use the plural-form of a verb for a single form noun: Example: "the fox play" is disagreement because the plural form 'play' is used for singular noun fox.
Go back to the text and re-read a passage where Watson made a discovery. If Sherlock praises him, you've got your answer. I'm sorry if this wasn't much help, but I don't have any text to go off of.
Are you asking for which ones are metaphors ??
If so...
The building was a maze
The sidewalk could fry an egg
Her eyes drilled into my face
The company is buried in work.
Those are all metaphors the others are literal