Correct the underlined words in these sentences.

a) Corrected to 'Their maid, Catherine, is only sixteen.'
b) Corrected to 'The jewel is very expensive.'
c) Corrected to 'You are Sherlock Holmes, I believe.'
d) Corrected to 'When did the diamond disappear, sir?'
e) Corrected to 'You took that without asking. You’re a thief.'