Possible Clues:

• Listen in, earwig
• Listen to adverse reforms and hope he isn't there
• Girl needs to get hold of a sink, and tap
• Earwig to fall on part of roof
• Listen carefully, this happens when a roof collapses
• Secretly listen in
• Listen secretly to private talk
• Not appear to hear woman's concealing a deterioration
• Listen to what falls from 17 across
• Earwig could make part of house fall down