11.   The engine made a very strange noise when I tried to start the car.

12.   The strange metallic noises continued at intervals, whenever he was in a position to hear them.

13.   Then the baby began to make strange noises, and Alice looked into its face again.

14.   There was a strange rasping noise coming from over the next rise.

15.   There was a strange singing noise in his ears.

16.   There was a strange whistling noise in his ears.

17.   There were a lot of strange noises like the sound of the refrigerator unit going on and off in the trailer.

18.   What was that strange noise - Co-ack?

19.   I can hear a strange noise when the engine ticks over.

20.   Listen!