Possible Clues:

• A member giving support, very clued-up and relevant
• Appropriate
• This gets a support, so it gets back, while we're on the subject
• Poor sap falls by the way
• Suitable answer to offer not completed
• A pair work so badly by the way
• In respect to, with ''of''
• To the point, relevant
• A screw with outsize fitting
• While we're on the subject, that gives support, so it's up