One or other of these could always give you a clue.

If they call back, tell them to give us a clue.

Perhaps he could find something in her room to give him a clue.

Running through time did give me a clue or two, though.

So far he hadn't said anything to give her a clue.

He could see nothing to give him a clue as to where they were.

The role of the teacher is to give clues, not to model the language.

Which of course gave me the clue as to what I had to do.

Once the woman was found, she would give them their next clue.

Small and white, they gave no clue as to who she might actually be.