Help Detective Paws finalize his official report about the notorious cat burglar's interrogation. Choose the correct reported verb phrase to match each of the suspect's original statements.

(Direct speech: "I must have dropped the tuna." / "Shall I show you the paw prints?" / "I needn't explain myself.")

The suspect admitted that he must have dropped the tuna at the crime scene. Then, he cheekily asked if he should show me the paw prints on the vault. Finally, he haughtily declared that he didn't have to explain himself to a mere dog.

The suspect admitted that he must have dropped the tuna at the crime scene.

When reporting a past deduction ("must have done"), the modal phrase does not change in indirect speech. "Had to drop" would incorrectly imply a past obligation rather than a deduction.

Then, he cheekily asked if he should show me the paw prints on the vault.

When "shall" is used in a direct question to make an offer or ask for advice ("Shall I...?"), it changes to "should" in reported speech.

Finally, he haughtily declared that he didn't have to explain himself to a mere dog.

The present lack of obligation ("needn't do") changes to "didn't have to do" (or "wouldn't have to do") in reported speech. "Needn't have explained" has a completely different meaning: it means he actually did explain it, but it was unnecessary!