A skinny young man in a bright red jacket whistled sharply as the car turned the corner.

For a long time nothing happened, and then Balthasar whistled sharply.

Before the girl could reply, he whistled sharply and turned to the window.

Taking out his flashlight, he flashed it on, then whistled sharply.

She whistled sharply to the dogs and charged toward the bull.

One man in the front rank even whistled sharply between his teeth.

He thrust two fingers into his mouth and whistled sharply.

She played with him until his master whistled sharply.

However, for the reason stated above, the television could be turned on if someone broke a glass or even whistled sharply!

Wind whistled sharply through the door as it closed behind him.