Possible Clues:

• Me-tooed, in a way
• Rang Czechs housed in pairs regularly
• It's backed, by the sound of it
• One was sure of a good sound return from this
• You get a good return from this, by the sound of it
• That gave one a return, by the sound of it
• Made a comeback
• Repeated half the speech with a dictionary
• Sounded again and again
• Came back through a tunnel, perhaps